I have been using 3120 on both a MacBook Pro (2GB SDRAM) and a MacBook (2GB SDRAM). I have an XP and a Vista VM on each and all was fine. I upgraded the MacBook Pro to 3150 and everything went perfectly. When I upgraded the MacBook to 3150, several screen issues came up: - Coherence stopped working. When I select coherence, the screen spins and then nothing. No task bar, no Windows applications showing up, nothing. If I go back to "OS Window" it is all there - Full screen doesn't work either. shows a tiny section of the OS in the upper left part of my MacBook screen and that's it. Again, if I quit Full Screen, "OS Window" works just fine - Problem exists on both XP and Vista VMs, no difference - Yes, I upgraded the Parallels Tools... - I tried uninstalling and then deleting all preferences (".plist" files.) I re-installed, it re-asked me for my activiation key, but then same issue - I reverted back to 3120, all screen issues are solved Any ideas or similar experience? Parallels team, anything you need from me to help?