Hi, This is a FYI only, a problem that I had, and solved: Im running Parallels Desktop 3.0 Build 5582 on Mac, and my guest OS is CheckPoint SecurePlatform (a Linux 2.6 derivative). The guest OS would kernel panic with the Intel VT-x enabled, so I disabled it, and it ran fine no problems. The only thing is every time you start the Guest you get a warning message: Intel VT-x is disabled. Enabling VT-x will enhance your virtual machine performance. Do you wish to enable VT-x automatically? Yes No [] Do not show this message again I was clicking no, until I decided to click [] Do not show this message again. After clicking that, the VT-x was enabled, and would stay on enabled, I couldn't disable it, and my guest would not boot. The fix: Run the Property List Editor: /Developer/Applications/Utilities/Property List Editor Open the Parallels plist file: ~/Library/Preferences/com.parallels.Parallels.plist Change the setting from 1 to 0: Parallels.MainApp.HideMessage_W1416 Save the plist file, and restart Parallels. Is there a doc somewhere which documents all the settings in the parallels plist file? Cheers.