Have you tried a clean install ?

Delete Limewire using start>programs>Limewire>uninstall
Then delete the preference folder again and do a windows search for lime. Delete anything associated with Limewire

Then uninstall all Java

Download this one (use the offline installer)

http://www.java.com/en/download/windows_xpi.jsp

Do the check on the downloadpage after restarting your PC

Then download and install Limewire once again use the offline installer

www.limewire.com

I has worked for some

Dammit.. just lost KK to AA (all in on flop)