I run a Vista VM on Parallels 4, and I usually suspend the machine and quit Parallels rather than shut down the machine, when I'm done working in Windows. But most of the time when I resume the machine later, it'll take a very long time (~5 min on average) to respond. It'll eventually register mouse clicks, etc., that I put in, but take a really long time to do it. Once it starts going it's fine. This doesn't happen when I start a machine that's been stopped. Any idea why this is happening, and how to fix it?