I was excited to find out that Parallels supports OpenGL so that I could run Gnome-Shell in Linux on my VM. I downloaded the trial version of Parallels to test this out and make sure it works well enough to be productive in it. For a while, it was great and then all of the sudden the screen flashed and made it look like all of my applications had closed. After about a second, everything came back to normal. I figured it was just something I had done. However, a little while later, the same thing. Then about 30 minutes later, the same thing. However, this time it seemed to make gnome-shell crash and all of my virtual desktops were gone, the window borders were gone and I was left with a bunch of cluttered windows on my desktop. I couldn't do anything so I had to shutdown the VM and restart. I'm running this on a MacBook Pro, i7 processor with 8G of memory. I have assigned 4 cores and 3G of memory to the VM. I have assigned 32M of memory to the video (although I recently upped it to 256M hoping it would help some) and I have it set to make the VM have more performance than my Mac. I am also running it in full screen mode. Does anyone else have this problem? I would really like to purchase a copy of Parallels, but this would certainly stop me from doing so if this problem is typical and there are no work arounds as it would keep me from being productive.