It's impossible for LW to delete folders (there's no code to do that). So you don't have a LimeWire problem, but maybe some of us can help.

Before you reinstall everything, can you give more details?

It would help if people knew your level of experience on OS X (i.e, do you know how to search your hard drive, or at the other end, use the Console, or use the Terminal?)

btw--use the PM button to if you don't want to make public posts.

Your preferences can be reset if OS X runs out of memory . . .