I have recently re-installed my system software, completed all the Apple and Java updates, run Disc Utility from the hardrive AND from the installation CD, removed preferences, installed and re-installed Limewire (yes the Beta version too)...you get the picture.
The result...a bouncing Icon in my dock then poof! NADA.
If I have missed something please inform me. I am almost ready to download iswipe.

System:
20" iMac G5, 1.8GHZ, 768MB DDR

go steelers.