You're using the Java 1.5 part 2 update. I don't know but are you supposed to have Java 1.5_01 installed 1st?
I might suggest you uninstall java using the add/remove control panel. Then downld the Java installer & save it to your computer (don't install it over the net!!!) Then install it. You can find a link here:
Fixes for Limewire It might not be applicable but it might be worth deleting your LW preferences folder also.