Hi, I have the same problem i cannot connect. Iam useing a laptop its a sony viao it runs vista and I have done everthing. I have done everything u have said to do. I also got a desktop that runs windows xp and i have no problems running LW. I'm just wondering could it be issues with vista and LW?? I have used LW on the laptop and have had no problems till the up grade to 4.18. Like I said the desktop has no problems running LW. The laptop though just cant connect and LW does nothing no error msg or anything doesnt say unable to connect. It just sits at the 1 bar trying to connect.

Make sure both the connection & listening ports are different on each LW. Find out via Tools > Options > Advanced > Firewalls. Ports between 49152 - 65535 are good to use.

Generally the problem with connection after updating is usually the out of date Gnutella.net file. You changed that one to one in that link? If yes, how about copying the one from your desktop to the laptop. :)