OK: Heres a good one. MacBookPro, 1 G RAM, OS X 10.4.6 (fully up to date) and PW Beta4. Had MacBook attached to external ViewSonic monitor and keyboard/mouse. Launched Parallels. Started the XP session. Windows loaded, the PW screen resized to the appropriate size for the PW settings, then the MacBook spontaneously rebooted. I disconnected the external monitor/keyboard then restarted PW on the MacBookPro. Parallels loaded by did not load the last used image. I had use the file menu to reselect the file. Parallels informed me the image was locked and allowed me to ovrride the lock. I then launched the session and XP had to perform a check disk. It proceeded to find some cross-linked files, corrected them, then loaded normally.