I ran into a serious problem with build 3094. I had installed a new application on Windows 2000 within Parallels, had used the new application for several minutes. I went to do something unrelated in Mac OS X which resulted in a system hang. (iTunes was attempting to access a network drive which was no longer available). End result, the system hung, I had to do a hard poweroff. I had not used the Windows 2k parallels session for several minutes, plenty of time for it to sync up with the hard drive. When rebooting, my Windows 2000 disk image was severely corrupted so that I could no longer boot Windows 2000. I had completely lost my disk image. Parallels should have written sync up the VM image to the harddrive rather than keep so much in memory. Luckily I had a recent backup of the disk image.