Coherency! It scared me at first since I didn't know what it was, but turned it on and poof, my Mac is a Mac and a Windows PC. There's the Windows toolbar at the bottom of my screen and I can alt-tab to Internet Explorer 7. Just don't forget how to switch back! Otherwise, this release runs faster and smoother on my 2.66 Mac Pro than any release to date. I'm so glad to so goodbye to Virtual PC. Thanks Parallels!