OS XP Pro64, fresh installation. When I select 2 network interfaces (1 is a virtual created by VirtualBox) and bridge them, within 15 seconds of the bridge completion, the Host PC spontaneously reboots and then is in a reboot cycle until I F8 and restore to last know working state. I am not getting any error message or BSOD to help me. Any clues on this would be awesome. Thanks in advance, Jeff