When you post a problem, it is usually a good idea to tell us about your environment.
I have also been having an issue with running a MF development environment under Fusion. I have been attributing it to the processor speed of my IMac (3.4GHZ i7), but it is interesting to see an issue on a slower processor. It is also interesting to note that you are having a problem with an i7 processor. All of the people reporting this problem have been running recent generation Intel or AMD chips.
We know how to recreate a problem on a Windows 7 system, and I suspect once a solution is found it will also fix the problem with VM hosted systems.