Just installed to a Mac Pro. In XP, the correct IP is shown, DNS resolution seems to work, but most packets don't seem to get through. Strangely, I can access certain sites just fine (google) but most simply don't work. I can't even ping them, though it is getting the correct IP. I tried hooking up the second ethernet port and told Parallels to use that, with the same result. I tried changing the MAC address. Nothing helps.