While I don't have that many files, I'm experiencing the same damn problem. After updating to 2.5.3, it no longer recognizes file that are in my shared folder. I've tried creating a new shared folder and copying files into it, then adding that in Limewire with no change. It may recognize 1 or 2 more files at random intervals. It currently only recognizes about 5 of the 60 files I'm attempting to share.

I suspect a corrupt .plist preference file somewhere, but haven't had any luck locating it.

Can anyone tell me where I can get a previous version of Limewire for OS X (e.g. 2.4.x?)