Build 3094 locks up my Mac Pro. If I open any virtual machine or try to create a new one the computer immediately locks up. Build 1970 works just fine with VT-x and all the stuff on unlike earlier versions. It just seems as if for me at least that this build is a step backwards even with the new features. I wouldn't know how the new features are since I cannot use them. Is there some weird something I need to do to get this build to work? Because of problems with previous builds I've started the practice of uninstalling Parallels, restarting, installing the new Parallels, restarting, and then trying it. That doesn't work with this version. I'm just unable to get it to do anything. No crash report is shown anywhere after the computer locks up, nothing. In this case I wish it was a kernel panic so I'd have something to show. I use a Mac Pro 2x3Ghz, 4GB of RAM, ATI Radeon X1900XT.