And their iMacs and Mac Mini's? Yeah, we use them as servers because we have no choice. We actually need Thunderbolt now. But they are buggy as hell. The built-in network interfaces on them drop for no apparent reason, and need to be re-started. Three separate boxes do this: 2 iMacs and one Mini. We have actually resorted to putting SmallTree PCIe gigabit ethernet cards (Intel Pro chipsets) into Thunderbolt PCI express chassis, in order to get a stable ethernet stack. Those never drop on us. How can Apple get something as basic as a stable Ethernet port so wrong? No load testing. No desire to fix their drivers or firmware, whichever is responsible.