I am having a similar problem to many other users in that Limewire tries to start up then unexpectedly quits. I have read all the posts about Java here and have trtied pretty much everything suggested but the problem persists. The error message I get if I were to submit a report to Apple reads (in part):
Date/Time: 2005-05-25 17:36:36 +1000
OS Version: 10.3.9 (Build 7W98)
Report Version: 2

Command: LimeWire
Path: /Applications/LimeWire/LimeWire.app/Contents/MacOS/LimeWire
Version: 4.8.1 (LimeWire 4.8.1)
PID: 340
Thread: 11

Exception: EXC_BAD_ACCESS (0x0001)
Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x00000048

THis all started happening after I installed Extensis Suitcase X1 - is that just a coincidence?

Any suggestions other than already posted would be very much appreciated. Thans.