Well you're using a beta product (parallels) to access and utiltize an OS that was installed using a beta product (bootcamp). Personally I would have waited until parallels released the new version.
Anyways reading the forums over on parallels seem to indicate lots of bugs in the latest release, even though they're calling it RC. Major memory leaks seem to be the main issue but other bugs are being reported. I was tempted for a nanosecond but after reading some of the stuff over there. I'll wait until they get the bugs shaken out.