Ok.. I have LW5.1.2, I am using WinXP, I am not an expert but i have some experience with p2p programs, I have 2 gigs of ram, about 40 gigs of harddrive unused, and the only antivirus/security program i have is Norton Antivirus. My modem is a USB iBurst Wireless interface, and i have never had problems like this before with it.