Hi, P4 is a lot more "resistant to hangs" - but that generally manifests itself as the guest OS being hung and the spawned P4 child process (guest OS container window, not the window that lets me select an OS) not being responsive. When I Force Quit, I don't get an option to report the failure, so Parallels is not obtaining information that properly represents my user experience. It's cathartic to send a crash report, so this adds to the frustration that it hung. Does anyone have a recommendation? On another note, since upgrading to P4, my guest OS hangs every few days after being up overnight. I come in, no joy. I can shutdown the P4 guest OS container, but if I do not shutdown all processes, the new guest OS I start will hang again later in the day, reasonably consistently (or at least by the next morning). If I shutdown all of P4, or reboot the Mac, then the guest OS is good for another 3-6 days. Any suggestions for that one?