So, I've just installed the WinHEC build of Longhorn in a VPC image, installed the additions with everything working fine. I then joined the domain, which prompts a reboot. Upon restart the screen displays "Use Ctrl-Alt-Del to login" but it doesn't work. The usual VPC method of Right-ALT+Del, nor using the VPC menu to send the command work. So, a nice new trial OS into which I can't login. Anyone got any ideas?