SC2 causes NIC to crash (solved)

Technical Support
The moment I log into Battle.Net I lose my network connection and the game stops responding. I am forced to use Task Manager to quit SC2. Also, I get a little yellow triangle over my network icon and lose all access to my LAN. I'm able to restore the connection by disabling the NIC (integrated Marvell chipset) and re-enabling it. I have the latest nForce drivers installed. Windows 7 (64-bit).

I managed to solve the above problem by switching from the nVidia network drivers to Microsoft.

Instructions for Windows 7:
1) Click the 'Start' button > Type in: "devmgmt.msc" and press the 'enter' key.
2) Expand 'Network Adapters' and double-click your NIC.
3) Click the 'Driver' tab at the top and then "Update Driver" button.
4) Select "Browse my computer for driver software" and "Let me pick from a list of device drivers on my computer".
5) Choose the driver that has "Microsoft" in parentheses (e.g., "NVIDIA nForce Networking Controller (Microsoft)") and click 'Next'.

This is the solution I came up with, there may be others. I hope this helps someone else.
I had the exact same problem you did, and your solution fixed it. Thank you!

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