Just came across this awesome post that describes how to fix an annoying bug with autotest that causes it not to show up like half the time. I hated having to go back to the terminal whenever growl didn't popup; every time it was another half second of my life wasted. I must've wasted upwards of 3 minutes because of this bug. I could've killed like 3 level 11 Goretusks in that time (just started playing WoW - level 15 Human Lock, username merckens, keep an eye out for me - I'll be the guy dominating everyone). If you've noticed this problem with your autotest-growl interaction, read the post. Worked for me.