1. Try deleting your LW preferences whilst LW is CLOSED. LW preferences are found here: /Users/your_username/Library/Preferences/LimeWire
2.
SAFE Boot & Repair Permissions OR/&
Resolving Disk, Permission, and Cache Corruption
3. OR re-install the Java using the standalone offline installer:
http://www.apple.com/downloads/macos...update142.html If it won't let you then double-click the hard-drive icon, open the Library, open the Receipts folder & find Java 1.4.2_Update2.pkg & delete it & try again. eg:
Receipts folder sample image