It could be an account specific issue. Try setting up a test account & see if same issue; Setting up a Test Account in OSX (click on link).

If same issue, might I suggest you try installing LW 4.16. http://www.gnutellaforums.com/mac-os...tml#post271009.

Also try changing your Java version priority around: Setting up Java 1.5; drag the first preference to the top of the list.

If you have not done it recently, I'd recommend a Safe Boot & Repair permissions: SAFE Boot & Repair Permissions