notify-send in crontab causes crash

[actionparsnip]

Binary package hint: libnotify4

I have made a script:

#!/bin/bash
export EMAILNUM=`curl -u username:password --silent "https://mail.google.com/mail/feed/atom" | tr -d '\n' | awk -F '<entry>' '{for (i=2; i<=NF; i++) {print $i}}' | sed -n "s/<title>\(.*\)<\/title.*name>\(.*\)<\/name>.*/\2 - \1/p" | wc -l`

if [ EMAILNUM == 0 ]; then exit 0
fi

if [ EMAILNUM == 1 ]; then
   notify-send -i /usr/share/app-install/icons/gmail-notify-icon.png "Gmail" "You have 1 new email"
else
   notify-send -i /usr/share/app-install/icons/gmail-notify-icon.png "Gmail" "You have $EMAILNUM new emails"
fi

This runs fine when executed from terminal. I cron'd the script to run every 5 mins with:

*/5 * * * * /usr/bin/andygmail

And every 5 mins the libnotify would create a crash rather than displaying what was intended.

BTW, feel free to use my code :)

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: libnotify-bin 0.7.1-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7
Uname: Linux 2.6.38-6-generic i686
Architecture: i386
Date: Sat Mar 12 20:06:22 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110202)
ProcEnviron:
 LANGUAGE=en_GB:en
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: libnotify4
UpgradeStatus: No upgrade log present (probably fresh install)