Upgraded to 4 with all sorts of issues, but I had it working. Quit XP and adjusted settings from "Configure". Tried to start up Parallels to get this: *** Unable to connect Hard Disk 1 A file or device required for the operation of Hard Disk 1 does not exist or is used by another process, or you have no permission to access it. The virtual machine wil continue running, but the device will be disconnected. *** I know this issues is scattered throughout some other active threads, but I wanted to start a thread just focusing on the issue. Parallels... can you please get on this issue and/or not release buggy upgrades please?