I have a fresh install of Windows 7 Professional x64 release edition from a student download MSDNAA account. I have downloaded all of the latest Win7 drivers for my motherboard (EVGA nForce 680i T1) and I'm using its on board network card. Every time I download from a website or download from my SFTP server (running linux) I will lose connection to my network. I'm plugged in by cable through a D-Link Wireless N gigabit router. Nothing else connected to my router loses connection so the problem is definitely somewhere in my computer. I recently upgraded from Vista Ultimate x64 and I had no connection issues on that platform. Running the troubleshooter will fix my connection to regular internet but if I the download is not canceled or if I try to run a new download the connection goes right back out again. That network connection icon in the tray will display the yellow triangle with the exclamation point. I saw on some forum that disabling the IPv6 of the adapter can fix this but for me it did nothing when I tried. Is anyone else having this problem or does anyone have any idea as to how to fix this? I have a ticket in to EVGA's tech support as well and I will update if anything comes from that.

I think I may have just gotten it running properly by removing the nVidia drivers and letting Windows correct itself from there. I'll let you know what happens next if anything turns up funny.