"handle all the incoming connections" is the only clue you might be running some torrent software.
Tell a little more.
As to drivers, tell HOW you update them. To start with, do not use the Windows Update or the Update Driver button in Windows.
Recently, I have been having my internet shut off and the only way I am able to get it back is to restart my computer.
I'm not sure what happens, but when I try and play an on-line game, or download updates for said game, my internet just shuts off.
I can't disable it in the Device Manager window when this happens either, it just locks up.
I read that it might be the integrated Ethernet on my mother board being unable to handle all the incoming connections or something like that, but I don't really know what causes it.
I am running an nForce chipset, the motherboard is an Asus M3N-HT.
On a side note, I am unable to update any drivers for it. Every time I try, it drops to 640x480 and I cannot change the settings. I have to roll back the drivers to make it work properly again.