Try removing the settings from your firewall, add them again & see whether that fixes anything. Restart your computer & then restart LW after you change your firewall rules.

Have you tried doing any of the fixes in the 'If LW Will Not Connect' thread? Maybe you just need to delete your preferences folder...that's a great fix for connection problems. And it might mean that you don't have to keep reinstalling LW??

Save the port forwarding for last, because that's the most complicated thing to do & it's worth trying all the other easier fixes first