This is a weird problem. When I connect to my router (linksys wrt54g-v5), doesn't seem to matter what kinda adapter I use, my computer is shut down. No warning, it's as if the power to the building is shut off. This was very annoying at first. I've been avoiding this problem by selecting stealth mode on my firewall (Kaperski anti-hacker). But I just found out that the stealth mode does not allow me to use port forwarding which I would like to use. Now the problem is annoying again. Anyone every hear of anything like this?