I'm having a similar problem... (Windows XP Home - LimeWire (whatever the current version is)...

The logo splash screen comes up, then disappears. Normally a few seconds afterwards the program comes up. Lately, nothing. Task Manager shows nothing active in processes. I had a version of Limewire that was a few levels back and downloaded the latest one... which required me to repurchase (I know, it sucks to be me). Installed... no change other than the new version number shows up in the splash screen. I've sent e-mail to LimeWire support and gotten an automated response, but nothing else yet. Any ideas? Is there a debug switch? Thanx.

L