1910 works for me I just purchased a dual core imac and your parallels desktop software. I couldn't get it to run, until I searched the web and found this forum & thread. After downloading the update, I am having no troubles at all (knock on wood). I have installed Studio 8 and Visual Studio C#.Net so far, and they are behaving normally. I would highly recommend anyone having problems with a new dual core imac to try this build. Fred.