I have posted this before. I only use Parallels to fly FSX. FSX worked perfectly in Parallels 5. I bought the upgrade to Parallels 6 for the promise of faster operation and faster graphics. With Parallels 6, FSX no longer works perfectly. Many pull-down menu items and many key commands work improperly or intermittently. After trying for a month to correct this, I finally gave up and removed the Parallels virtual machine and Parallels 6. Today I Installed Parallels 5, Windoz 7 Pro, MS FSX Deluxe and MS FSX Acceleration. After 6 hours of installation, FSX again works perfectly. Windoz applications I had purchased or downloaded still have to be recovered. Third party FSX planes still have to be recovered and downloaded. I only use Parallels for MS Flight Simulator. Since Parallels 5 works perfectly and Parallels 6 does not, Parallels, please refund my purchase of Parallels 6. I found Parallels 6 totally unsatisfactory and unusable for MS FSX. -Jim