diff --git a/bash/bash_vcs.sh b/bash/bash_vcs.sh
index 1616a61..ec019a2 100644
--- a/bash/bash_vcs.sh
+++ b/bash/bash_vcs.sh
@@ -83,8 +83,20 @@ __prompt_command() {
 		alias revert="svn revert"
 	}
 
+    	bzr_base_dir() {
+        	# bzr root is really slow, so we simulate it
+        	# with a bash script I modified frome here:
+        	# http://unix.stackexchange.com/questions/6463/find-searching-in-parent-directories-instead-of-subdirectories
+        	base_dir=$(pwd -P 2>/dev/null || command pwd)
+        	while [ ! -e "$base_dir/.bzr" ]; do
+            		# delete /* from the end of base_dir
+            		base_dir=${base_dir%/*}
+            		if [ "$base_dir" = "" ]; then return 1; fi
+        	done
+    	}
+
 	bzr_dir() {
-		base_dir=$(bzr root 2>/dev/null) || return 1
+		bzr_base_dir || return 1
 		if [ -n "$base_dir" ]; then
 			base_dir=`cd $base_dir; pwd`
 		else
@@ -139,4 +151,4 @@ if [ -z "$TM_SUPPORT_PATH"]; then
       trap 'echo -e "\e]1;$project>$BASH_COMMAND<\007\c"' DEBUG # show currently executing command in tab title
     ;;
   esac
-fi
\ No newline at end of file
+fi