I'm having the same problem. I'm running LimeWire 2.3.1 on Mac OS X (10.1.4). I clicked the red button in the upper left corner on the main LimeWire window last night. Since then, I've been completely unable to get the main LimeWire window to appear. The program will run (the stats window shows all kinds of activity and connections), and the icon will appear on the dock, but the main window is gone -- completely -- though I can get the statistics and preferences to windows to come up.

I've tried uninstalling and reinstalling. I've tried reinstalling 2.3.4 and then again the 2.3.1 I originally had on here. Everytime I have the same problem: no main LimeWire window will appear no matter what I do.

I read through the FAQ and through all the other messages in this General Mac OS X support, and I can't figure out what the problem could be. I wondered if the problem is related to a corrupt preferences file (one that doesn't get uninstalled by the LimeWire uninstaller, one that is hiding somewhere where I can't see or find it) as someone mentioned below, but I really have no idea. Help?