1. Repair permissions;
SAFE Boot & Repair Permissions
2. OSX updates can upset LW, therefore reinstall the "Offline" Java. Recommended is this version
http://www.apple.com/downloads/macos...update142.html
BTW if it gives an error trying to install, then remove the Java 1.4.2updatex file from the Receipts folder. (BUT do NOT remove any other file from that folder because the system requires those files!!!)
Receipts folder sample image