diff --git a/README.md b/README.md
index f3873b3..6cf51a1 100644
--- a/README.md
+++ b/README.md
@@ -28,16 +28,14 @@ INSTALLATION
 
 ### REQUIREMENTS
 
--   Python v2.7, 3.0, or 2.6 with argparse
--   Bash v4.0 for tab completion
+-   Python v2.6
+-   Bash v4.0 for tab completion (or zsh)
 
 If you are unable to update Python to a supported version, older
 versions of autojump can be
 [downloaded](https://github.com/joelthelion/autojump/downloads) and
 installed manually.
 
--   Python v2.6 is supported by [release
-    v19](https://github.com/downloads/joelthelion/autojump/autojump_v19.tar.gz).
 -   Python v2.4 is supported by [release
     v12](https://github.com/downloads/joelthelion/autojump/autojump_v12.tar.gz).
 
@@ -187,8 +185,7 @@ ADVANCED USAGE
 
     Let's assume the following database:
 
-        30   /home/user/mail/inbox
-        10   /home/user/work/inbox
+        30   /home/user/mail/inbox 10   /home/user/work/inbox
 
     `j in` would jump into /home/user/mail/inbox as the higher weighted
     entry. However you can pass multiple arguments to autojump to prefer
@@ -214,9 +211,20 @@ ADVANCED USAGE
 KNOWN ISSUES
 ------------
 
+-   For bash users, autojump keeps track of directories as a pre-command
+    hook by modifying $PROMPT\_COMMAND. If you overwrite
+    $PROMPT\_COMMAND in \~/.bashrc you can cause problems. Don't do
+    this:
+
+        export PROMPT_COMMAND="history -a"
+
+    Do this:
+
+    export PROMPT\_COMMAND="${PROMPT\_COMMAND}; history -a"
+
 -   The jump function `j` does not support directories that begin with
     `-`. If you want to jump a directory called `--music`, try using
-    `j music` instead of `j --music`.
+    `j music` instead of `j   --music`.
 
 -   jumpapplet (bug \#59)
 
diff --git a/docs/autojump.1 b/docs/autojump.1
index af8294e..887fe13 100644
--- a/docs/autojump.1
+++ b/docs/autojump.1
@@ -123,8 +123,7 @@ Let\[aq]s assume the following database:
 .IP
 .nf
 \f[C]
-30\ \ \ /home/user/mail/inbox
-10\ \ \ /home/user/work/inbox
+30\ \ \ /home/user/mail/inbox\ 10\ \ \ /home/user/work/inbox
 \f[]
 .fi
 .PP
@@ -163,10 +162,27 @@ All negative key weights are purged automatically.
 .RE
 .SS KNOWN ISSUES
 .IP \[bu] 2
+For bash users, autojump keeps track of directories as a pre-command
+hook by modifying $PROMPT_COMMAND.
+If you overwrite $PROMPT_COMMAND in ~/.bashrc you can cause problems.
+Don\[aq]t do this:
+.RS 2
+.IP
+.nf
+\f[C]
+export\ PROMPT_COMMAND="history\ -a"
+\f[]
+.fi
+.PP
+Do this:
+.PP
+export PROMPT_COMMAND="${PROMPT_COMMAND}; history -a"
+.RE
+.IP \[bu] 2
 The jump function \f[C]j\f[] does not support directories that begin
 with \f[C]-\f[].
 If you want to jump a directory called \f[C]--music\f[], try using
-\f[C]j\ music\f[] instead of \f[C]j\ --music\f[].
+\f[C]j\ music\f[] instead of \f[C]j\ \ \ --music\f[].
 .IP \[bu] 2
 jumpapplet (bug #59)
 .RS 2
diff --git a/install.sh b/install.sh
index eed2864..b0fc384 100755
--- a/install.sh
+++ b/install.sh
@@ -148,7 +148,7 @@ if [ ! ${local} ]; then
         success=
         fpath=`/usr/bin/env zsh -c 'echo $fpath'`
         for f in ${fpath}; do
-            cp -v ./bin/_j ${f} && success=true && break
+            install -v -m 0755 ./bin/_j ${f} && success=true && break
         done
 
         if [ ! ${success} ]; then
@@ -173,7 +173,7 @@ else # local installation
 
     if [ ${shell} == "zsh" ]; then
         mkdir -p ${prefix}/functions/
-        cp ./bin/_j ${prefix}/functions/
+        install -v -m 0755 ./bin/_j ${prefix}/functions/
     fi
 
     add_msg "local" ${shell}