If you are having network services crash when moving large files or using the network heavily and have a Marvell Yukon embedded network card, I have your solution.

It isn't disabling offloading. It isn't changing auto tuning. It isn't disabling QoS. Lock your negoation speed to 100 Full instead of Auto or 1000 and the network issues disappear instantly. Even with new drivers, this is the only work around that works 100% of the time.