Currently running Mountain Lion and Parallels 7 on both my iMac and my MBAir. Works flawlessly. My few Windows apps are critical and I cannot risk down time. Therefore, I am reluctant to upgrade to Mavericks for fear of incompatibility issues. Yes, I could go to Parallels 9 which is just released, but Parallels 7 is extremely stable, and I am afraid that upgrading both Parallels and OSX would just double (or worse) my risk. Anyone tested Mavericks (Pre-GM) with Parallels 7 ? ? ?