Hi tygrrness,
Do you mean that LW won't open when you click on the icon?

Try these (I know you've reinstalled before but humour me):

First of all, reinstall Java. Use the JRE offilne installer, see point 1 below. Remove your current Java version before you install the new one
Fixes for LimeWire

Next, delete LW's preferences folder. See points 2 & 3 above & check to see if you have a folder in both locations. Remember to show hidden files & folders.

Now reinstall LW & make sure to use the offline installer (not the recommended one).
http://www.limewire.com/english/content/download.shtml

If none of those help, try changing compatibility. That's point 5 in the fixes thread.

If LW still won't open, maybe you're using a security program that's causing probs. For example, some antispyware will see LW as a threat & stop it from opening. Make sure LW's on the list of exceptions/allowed apps for all of your security programs