I was updating this virtual machine to Exchange Server 2007 SP1, and while the upgrade was in the process, suddenly the whole machine got frozen, and it stayed like that for almost 30 minutes, I could not access it, where I had to force the shutdown of this machine. Now, when this machine restarted I logged on and found so many errors in the event viewer related for Exchange. Here is the Weird thing, I couldn’t find the Exchage 2007 folders under the program list, where did they go??????