Try re-installing Java. Downld the Java installer program & save it to your computer (don't install over the net!)

If this doesn't work then delete your LW preferences folder called .limewire: Fixes for Limewire A link to Java can also be found there.

For Linux it's found here: ~/.limewire

I don't know which version of Java Linux uses or where to get it ... I'm sure you know better than me! lol