I've used LimeWire fine in the past, but now, when I click on the desktop icon or start menu shortcut, nothing happens.

Here's the history of the problem:

I uninstalled some spyware and Java Runtime environment, but THEN when LW didn't work, I did a system restore. no help. I uninstalled LW and re-installed using my original installer file. nothing. I uninstalled again, downloaded the new LW version from the site, and installed it. I even uninstalled Java and installed the JRE version that your site links to. Still nothing. Oh, and naturally I rebooted after every operation.

I have an always-on cable internet connection. No other problems of any kind, and tons of memory. WHAT GIVES?