I figured it out back when Security Update 2005-007 v1.0 came out people complained that it broke 64 bit applications. I dont know if LimeWire is or not but Apple released v1.1 which was supposed to fix the problem. I figured its worth a try, it worked.
Get it http://www.apple.com/support/downloads/securityupdate2005007v11macosx1042client.html