I upgraded from PD 4 (latest version) to PD 5 and the XP Pro partition will not boot anymore. It just BSOD over and over again, and it doesn't even start in safe mode. I am running Mac OSX 10.6.1 and I am on a 15" MBP Unibody late 2008. The message reads WORKER_TREAD_RETURNED_AT_BAD_IRQL *** STOP: 0x000000E1 (0x8057EA01,0x0000001c,0x00000000,0x80568CC0)