Yeah, tried all that - the pref folder, the JAVA Reinstall, the uninstall of the firewall and reinstall of LW - you name it.
Having used Limewire successfully for several years under XP and prior, it is unacceptable that a product that I have paid money for does not work under Vista - this is 2007 for GS.
What is LW doing about it - I don't see ANY assistance to registered users with valid licences from them.
Nick