I hope you all saw this http://www.gnutellaforums.com/mac-os...sx-10-5-a.html (click on link)

Also, make sure you do safe boots & repair permissions after installing any software or updates for programs or OSX; help! limewire suddenly gone down, cant get it working. - Gnutella Forums (permissions) SAFE Boot & Repair Permissions.

You can also set up another account on your computer & see if the same problem occurs; Setting up a Test Account in OSX (click on link)