diff --git a/ADPassMon.xcodeproj/project.xcworkspace/xcuserdata/bukowinskip.xcuserdatad/UserInterfaceState.xcuserstate b/ADPassMon.xcodeproj/project.xcworkspace/xcuserdata/bukowinskip.xcuserdatad/UserInterfaceState.xcuserstate
index 602ae33..748d85d 100644
Binary files a/ADPassMon.xcodeproj/project.xcworkspace/xcuserdata/bukowinskip.xcuserdatad/UserInterfaceState.xcuserstate and b/ADPassMon.xcodeproj/project.xcworkspace/xcuserdata/bukowinskip.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/ADPassMon/ADPassMon-Info.plist b/ADPassMon/ADPassMon-Info.plist
index e7053d0..cfc56a0 100644
--- a/ADPassMon/ADPassMon-Info.plist
+++ b/ADPassMon/ADPassMon-Info.plist
@@ -21,7 +21,7 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>0</string>
+	<string>3</string>
 	<key>LSApplicationCategoryType</key>
 	<string>public.app-category.utilities</string>
 	<key>LSMinimumSystemVersion</key>
diff --git a/ADPassMon/ADPassMonAppDelegate.applescript b/ADPassMon/ADPassMonAppDelegate.applescript
index 71b9898..2121c24 100644
--- a/ADPassMon/ADPassMonAppDelegate.applescript
+++ b/ADPassMon/ADPassMonAppDelegate.applescript
@@ -38,7 +38,7 @@ script ADPassMonAppDelegate
     property NSMenu :                   class "NSMenu"
     property NSThread :                 class "NSThread" -- for 'sleep'-like feature
     property NSMenuItem :               class "NSMenuItem"
-    property NSTimer :                  class "NSTimer" -- so we can do stuff at regular intervals
+    property NSTimer :                  class "NSTimer" of current application -- so we can do stuff at regular intervals
     property NSUserNotificationCenter : class "NSUserNotificationCenter" -- for notification center
     property NSWorkspace :              class "NSWorkspace" -- for sleep notification
 
@@ -53,6 +53,8 @@ script ADPassMonAppDelegate
     property selectedMethod :       missing value
     property thePassword :          missing value
     property toggleNotifyButton :   missing value
+    property processTimer :         missing value
+    property domainTimer :          missing value
 
 --- Booleans
     property first_run :            true
@@ -95,6 +97,7 @@ script ADPassMonAppDelegate
     property daysUntilExpNice : ""
     property expirationDate :   ""
     property mavAccStatus :     ""
+    property checkInterval :    4  -- hours
 
 --- HANDLERS ---
 
@@ -211,6 +214,7 @@ Enable it now?" with icon 2 buttons {"No", "Yes"} default button 2)
                                             selectedMethod:0, ¬
                                             isManualEnabled:isManualEnabled, ¬
                                             enableNotifications:enableNotifications, ¬
+                                            checkInterval:checkInterval, ¬
                                             expireAge:expireAge, ¬
                                             expireDateUnix:expireDateUnix, ¬
                                             pwdSetDate:pwdSetDate, ¬
@@ -231,6 +235,7 @@ Enable it now?" with icon 2 buttons {"No", "Yes"} default button 2)
         tell defaults to set my selectedMethod to objectForKey_("selectedMethod") as integer
         tell defaults to set my isManualEnabled to objectForKey_("isManualEnabled") as integer
         tell defaults to set my enableNotifications to objectForKey_("enableNotifications") as integer
+        tell defaults to set my checkInterval to objectForKey_("checkInterval") as real
         tell defaults to set my expireAge to objectForKey_("expireAge") as integer
         tell defaults to set my expireDateUnix to objectForKey_("expireDateUnix") as integer
         tell defaults to set my pwdSetDate to objectForKey_("pwdSetDate") as integer
@@ -305,6 +310,10 @@ Enable it now?" with icon 2 buttons {"No", "Yes"} default button 2)
             my statusMenu's itemWithTitle_("Change Password…")'s setEnabled_(0)
         end if
     end domainTest_
+    
+    on intervalDomainTest_(sender)
+        domainTest_(me)
+    end intervalDomainTest_
 
     -- Check if password is set to never expire
     on canPassExpire_(sender)
@@ -655,6 +664,10 @@ Enable it now?" with icon 2 buttons {"No", "Yes"} default button 2)
         doProcess_(me)
     end doProcessWithWait_
 
+    on intervalDoProcess_(sender)
+        doProcess_(me)
+    end intervalDoProcess_
+
 --- INTERFACE BINDING HANDLERS ---
 
     -- Bound to About item
@@ -740,6 +753,15 @@ Enable it now?" with icon 2 buttons {"No", "Yes"} default button 2)
         tell defaults to setObject_forKey_(warningDays, "warningDays")
     end setWarningDays_
 
+    -- Bound to checkInterval box in Prefs window
+    on setCheckInterval_(sender)
+        processTimer's invalidate() -- kills the existing timer
+        set my checkInterval to sender's intValue() as real
+        tell defaults to setObject_forKey_(checkInterval, "checkInterval")
+        -- start a timer with the new interval
+        set my processTimer to current application's NSTimer's scheduledTimerWithTimeInterval_target_selector_userInfo_repeats_((my checkInterval * 3600) as integer, me, "intervalDoProcess:", missing value, true)
+    end setCheckInterval_
+
     -- Bound to Notify items in menu and Prefs window
     on toggleNotify_(sender)
         if my enableNotifications as boolean is true then
@@ -776,6 +798,7 @@ Enable it now?" with icon 2 buttons {"No", "Yes"} default button 2)
         tell defaults to removeObjectForKey_("tooltip")
         tell defaults to removeObjectForKey_("selectedMethod")
         tell defaults to removeObjectForKey_("enableNotifications")
+        tell defaults to removeObjectForKey_("checkInterval")
         tell defaults to removeObjectForKey_("expireAge")
         tell defaults to removeObjectForKey_("expireDateUnix")
         tell defaults to removeObjectForKey_("pwdSetDate")
@@ -924,12 +947,12 @@ Please choose your configuration options."
             end if
         
             watchForWake_(me)
-        
-            -- Set a timer to trigger doProcess handler every 6 hrs and spawn notifications (if enabled).
-            NSTimer's scheduledTimerWithTimeInterval_target_selector_userInfo_repeats_(21600, me, "doProcess:", missing value, true)
             
-            -- Set a timer to check for domain connectivity every two minutes.
-            NSTimer's scheduledTimerWithTimeInterval_target_selector_userInfo_repeats_(120, me, "domainTest:", missing value, true)
+            -- Set a timer to check for domain connectivity every five minutes. (300)
+            set my domainTimer to current application's NSTimer's scheduledTimerWithTimeInterval_target_selector_userInfo_repeats_(300, me, "intervalDomainTest:", missing value, true)
+        
+            -- Set a timer to trigger doProcess handler on an interval and spawn notifications (if enabled).
+            set my processTimer to current application's NSTimer's scheduledTimerWithTimeInterval_target_selector_userInfo_repeats_((my checkInterval * 3600), me, "intervalDoProcess:", missing value, true)
         else
             log "Password does not exipire. Stopping."
             updateMenuTitle_("[--]", "Your password does not expire.")
diff --git a/ADPassMon/en.lproj/MainMenu.xib b/ADPassMon/en.lproj/MainMenu.xib
index 927d7c6..c452676 100644
--- a/ADPassMon/en.lproj/MainMenu.xib
+++ b/ADPassMon/en.lproj/MainMenu.xib
@@ -15,14 +15,14 @@
         <window title="ADPassMon Preferences" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" restorable="NO" releasedWhenClosed="NO" showsToolbarButton="NO" visibleAtLaunch="NO" animationBehavior="default" id="371">
             <windowStyleMask key="styleMask" titled="YES" closable="YES"/>
             <windowPositionMask key="initialPositionMask" leftStrut="YES" rightStrut="YES" topStrut="YES"/>
-            <rect key="contentRect" x="862" y="600" width="369" height="331"/>
+            <rect key="contentRect" x="862" y="600" width="369" height="358"/>
             <rect key="screenRect" x="0.0" y="0.0" width="1920" height="1178"/>
             <view key="contentView" id="372">
-                <rect key="frame" x="0.0" y="5" width="369" height="331"/>
+                <rect key="frame" x="0.0" y="5" width="369" height="358"/>
                 <autoresizingMask key="autoresizingMask"/>
                 <subviews>
                     <textField verticalHuggingPriority="750" id="754">
-                        <rect key="frame" x="20" y="268" width="329" height="43"/>
+                        <rect key="frame" x="20" y="295" width="329" height="43"/>
                         <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                         <textFieldCell key="cell" selectable="YES" allowsUndo="NO" sendsActionOnEndEditing="YES" borderStyle="bezel" alignment="center" title="Status" placeholderString="" drawsBackground="YES" id="755">
                             <font key="font" metaFont="system"/>
@@ -34,17 +34,17 @@
                         </connections>
                     </textField>
                     <tabView id="933">
-                        <rect key="frame" x="13" y="10" width="343" height="256"/>
+                        <rect key="frame" x="13" y="10" width="343" height="283"/>
                         <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                         <font key="font" metaFont="system"/>
                         <tabViewItems>
                             <tabViewItem label="Settings" identifier="1" id="934">
                                 <view key="view" id="937">
-                                    <rect key="frame" x="10" y="33" width="323" height="210"/>
+                                    <rect key="frame" x="10" y="33" width="323" height="237"/>
                                     <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                                     <subviews>
                                         <textField verticalHuggingPriority="750" id="938">
-                                            <rect key="frame" x="14" y="190" width="295" height="17"/>
+                                            <rect key="frame" x="14" y="217" width="295" height="17"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" alignment="left" title="Maximum password age discovery method:" id="959">
                                                 <font key="font" metaFont="system"/>
@@ -53,7 +53,7 @@
                                             </textFieldCell>
                                         </textField>
                                         <matrix verticalHuggingPriority="750" allowsEmptySelection="NO" id="939">
-                                            <rect key="frame" x="29" y="162" width="260" height="18"/>
+                                            <rect key="frame" x="29" y="189" width="260" height="18"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
                                             <size key="cellSize" width="107" height="18"/>
@@ -90,7 +90,7 @@
                                             </cells>
                                         </matrix>
                                         <textField toolTip="Enter maximum password age, in days" verticalHuggingPriority="750" id="941">
-                                            <rect key="frame" x="256" y="160" width="50" height="22"/>
+                                            <rect key="frame" x="256" y="187" width="50" height="22"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" enabled="NO" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" placeholderString="days" drawsBackground="YES" id="953">
                                                 <numberFormatter key="formatter" formatterBehavior="custom10_4" positiveFormat="#,##1.###" negativeFormat="#,##1.###" numberStyle="decimal" allowsFloats="NO" paddingCharacter="*" roundingMode="halfUp" minimumIntegerDigits="1" maximumIntegerDigits="3" maximumFractionDigits="3" decimalSeparator="." groupingSeparator="," currencyDecimalSeparator="." plusSign="+" minusSign="-" notANumberSymbol="NaN" perMillSymbol="‰" percentSymbol="%" exponentSymbol="E" positivePrefix="" positiveSuffix="" negativePrefix="-" negativeSuffix="" id="954">
@@ -113,7 +113,7 @@
                                             </connections>
                                         </textField>
                                         <button toolTip="Check this to start ADPassMon automatically on each login" id="942">
-                                            <rect key="frame" x="15" y="61" width="146" height="26"/>
+                                            <rect key="frame" x="15" y="58" width="146" height="26"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <buttonCell key="cell" type="check" title="Add to Login Items" bezelStyle="regularSquare" imagePosition="left" alignment="left" inset="2" id="952">
                                                 <behavior key="behavior" pushIn="YES" changeContents="YES" lightByContents="YES"/>
@@ -124,7 +124,7 @@
                                             </connections>
                                         </button>
                                         <button toolTip="Select this to enable Growl notifications for upcoming password expiration " id="943">
-                                            <rect key="frame" x="15" y="136" width="128" height="18"/>
+                                            <rect key="frame" x="15" y="133" width="128" height="18"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <buttonCell key="cell" type="check" title="Use Notifications" bezelStyle="regularSquare" imagePosition="left" alignment="left" inset="2" id="951">
                                                 <behavior key="behavior" pushIn="YES" changeContents="YES" lightByContents="YES"/>
@@ -136,7 +136,7 @@
                                             </connections>
                                         </button>
                                         <textField verticalHuggingPriority="750" id="944">
-                                            <rect key="frame" x="41" y="93" width="209" height="37"/>
+                                            <rect key="frame" x="41" y="90" width="209" height="37"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <textFieldCell key="cell" allowsUndo="NO" sendsActionOnEndEditing="YES" title="How many days before expiration do you want to be notified?" id="950">
                                                 <font key="font" metaFont="system"/>
@@ -144,17 +144,24 @@
                                                 <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
                                             </textFieldCell>
                                         </textField>
-                                        <textField verticalHuggingPriority="750" id="945">
-                                            <rect key="frame" x="256" y="100" width="50" height="22"/>
+                                        <textField verticalHuggingPriority="750" id="p8b-ZQ-kHq">
+                                            <rect key="frame" x="15" y="159" width="235" height="17"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
-                                            <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" enabled="NO" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" placeholderString="days" drawsBackground="YES" id="948">
-                                                <numberFormatter key="formatter" formatterBehavior="custom10_4" positiveFormat="#,##1.###" negativeFormat="#,##1.###" numberStyle="decimal" allowsFloats="NO" paddingCharacter="*" roundingMode="halfUp" minimumIntegerDigits="1" maximumIntegerDigits="3" maximumFractionDigits="3" decimalSeparator="." groupingSeparator="," currencyDecimalSeparator="." plusSign="+" minusSign="-" notANumberSymbol="NaN" perMillSymbol="‰" percentSymbol="%" exponentSymbol="E" positivePrefix="" positiveSuffix="" negativePrefix="-" negativeSuffix="" id="949">
-                                                    <real key="multiplier" value="1"/>
-                                                    <real key="roundingIncrement" value="1"/>
+                                            <textFieldCell key="cell" allowsUndo="NO" sendsActionOnEndEditing="YES" alignment="left" title="Expiration check interval (in hours):" id="44M-Db-JwW">
+                                                <font key="font" metaFont="system"/>
+                                                <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                                                <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                                            </textFieldCell>
+                                        </textField>
+                                        <textField verticalHuggingPriority="750" id="QZs-68-8lh">
+                                            <rect key="frame" x="256" y="157" width="50" height="22"/>
+                                            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                                            <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" placeholderString="hours" drawsBackground="YES" id="H0Z-4B-6om">
+                                                <numberFormatter key="formatter" formatterBehavior="default10_4" numberStyle="decimal" minimumIntegerDigits="1" maximumIntegerDigits="2000000000" maximumFractionDigits="3" id="81B-Ep-E3i">
                                                     <real key="minimum" value="1"/>
-                                                    <real key="maximum" value="999"/>
+                                                    <real key="maximum" value="24"/>
                                                     <metadata>
-                                                        <real key="inspectorSampleValue" value="1111"/>
+                                                        <real key="inspectorSampleValue" value="0.5"/>
                                                     </metadata>
                                                 </numberFormatter>
                                                 <font key="font" metaFont="system"/>
@@ -162,13 +169,12 @@
                                                 <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
                                             </textFieldCell>
                                             <connections>
-                                                <action selector="setWarningDays:" target="494" id="972"/>
-                                                <binding destination="494" name="enabled" keyPath="enableNotifications" id="VDp-YF-6bn"/>
-                                                <binding destination="494" name="value" keyPath="warningDays" id="965"/>
+                                                <action selector="setCheckInterval:" target="494" id="eKy-JJ-HmW"/>
+                                                <binding destination="494" name="value" keyPath="checkInterval" id="Vuz-bJ-x2t"/>
                                             </connections>
                                         </textField>
                                         <textField verticalHuggingPriority="750" id="l68-JV-PGI">
-                                            <rect key="frame" x="14" y="41" width="294" height="14"/>
+                                            <rect key="frame" x="14" y="38" width="294" height="14"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <textFieldCell key="cell" allowsUndo="NO" sendsActionOnEndEditing="YES" alignment="center" title="Note: Press Enter after modifying values to apply changes" id="Nbq-Rb-Asb">
                                                 <font key="font" metaFont="smallSystem"/>
@@ -177,7 +183,7 @@
                                             </textFieldCell>
                                         </textField>
                                         <button verticalHuggingPriority="750" id="946">
-                                            <rect key="frame" x="105" y="5" width="112" height="32"/>
+                                            <rect key="frame" x="105" y="2" width="112" height="32"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <buttonCell key="cell" type="push" title="Test Settings" bezelStyle="rounded" alignment="center" state="on" borderStyle="border" inset="2" id="947">
                                                 <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
@@ -187,16 +193,39 @@
                                                 <action selector="doKerbCheck:" target="494" id="974"/>
                                             </connections>
                                         </button>
+                                        <textField verticalHuggingPriority="750" id="945">
+                                            <rect key="frame" x="256" y="97" width="50" height="22"/>
+                                            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                                            <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" enabled="NO" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" placeholderString="days" drawsBackground="YES" id="948">
+                                                <numberFormatter key="formatter" formatterBehavior="custom10_4" positiveFormat="#,##1.###" negativeFormat="#,##1.###" numberStyle="decimal" allowsFloats="NO" paddingCharacter="*" roundingMode="halfUp" minimumIntegerDigits="1" maximumIntegerDigits="3" maximumFractionDigits="3" decimalSeparator="." groupingSeparator="," currencyDecimalSeparator="." plusSign="+" minusSign="-" notANumberSymbol="NaN" perMillSymbol="‰" percentSymbol="%" exponentSymbol="E" positivePrefix="" positiveSuffix="" negativePrefix="-" negativeSuffix="" id="949">
+                                                    <real key="multiplier" value="1"/>
+                                                    <real key="roundingIncrement" value="1"/>
+                                                    <real key="minimum" value="1"/>
+                                                    <real key="maximum" value="999"/>
+                                                    <metadata>
+                                                        <real key="inspectorSampleValue" value="1111"/>
+                                                    </metadata>
+                                                </numberFormatter>
+                                                <font key="font" metaFont="system"/>
+                                                <color key="textColor" name="textColor" catalog="System" colorSpace="catalog"/>
+                                                <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                            </textFieldCell>
+                                            <connections>
+                                                <action selector="setWarningDays:" target="494" id="972"/>
+                                                <binding destination="494" name="enabled" keyPath="enableNotifications" id="VDp-YF-6bn"/>
+                                                <binding destination="494" name="value" keyPath="warningDays" id="965"/>
+                                            </connections>
+                                        </textField>
                                     </subviews>
                                 </view>
                             </tabViewItem>
                             <tabViewItem label="Reset" identifier="2" id="935">
                                 <view key="view" id="936">
-                                    <rect key="frame" x="10" y="33" width="323" height="210"/>
+                                    <rect key="frame" x="10" y="33" width="323" height="237"/>
                                     <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                                     <subviews>
                                         <textField verticalHuggingPriority="750" id="977">
-                                            <rect key="frame" x="15" y="110" width="293" height="51"/>
+                                            <rect key="frame" x="15" y="125" width="293" height="51"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <textFieldCell key="cell" allowsUndo="NO" sendsActionOnEndEditing="YES" alignment="left" title="If you're having trouble with ADPassMon, use this button to remove your saved settings and revert to defaults." id="978">
                                                 <font key="font" metaFont="system"/>
@@ -205,7 +234,7 @@
                                             </textFieldCell>
                                         </textField>
                                         <button verticalHuggingPriority="750" id="600">
-                                            <rect key="frame" x="88" y="57" width="146" height="32"/>
+                                            <rect key="frame" x="88" y="72" width="146" height="32"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <buttonCell key="cell" type="push" title="Revert to Defaults" bezelStyle="rounded" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="601">
                                                 <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
@@ -222,7 +251,7 @@
                     </tabView>
                 </subviews>
             </view>
-            <point key="canvasLocation" x="348.5" y="349.5"/>
+            <point key="canvasLocation" x="348.5" y="363"/>
         </window>
         <customObject id="494" customClass="ADPassMonAppDelegate">
             <connections>