Someone posted earlier & said they changed their LW compatibility to windows 2k & it fixed it. This might not fix it for you but it's worth trying; see Fixes for Limewire

Depending on which version of Java you have, it might be worth swapping versions. If you have Java 1.5 then uninstall it using the Add/Remove control panel & then install Java1.4.2 Or if you have 1.4.2 then update to 1.5 (Links for Java can be found in the link above.) Also, don't install Java over the net, downld the installer & save it to your computer 1st & then install it.