Some Beta users noticed that we block profiling also for instrumentation-based profiling. If you are one of these people, I have good news and bad news for you.
The good news is that we will enable profiling instrumented applications on a Virtual PC. [Disclaimer: I am writing here about a product that is not yet released so this is not final]
The bad new is that this may not be a good idea to do that. The performance characteristics on a virtual machine can be different from a real machine. For example, I/O on a virtual machine takes longer as it virtualized. Virtual PC emulates a single, non-hyper threaded CPU. If your application is going to be deployed on a multi-processor server, you’d better profile on such environment and not on a single-CPU machine.