I've installed Windows three times. It lets me install and lets me get into Windows, once in there, it crashed twice right when I tried installing Parallels Tools and then the third time I decided not to install Parallel Tools and after a few minutes it crashed anyway.
Once it crashes, I get the beach ball and it basically crashes my system and I have to force restart. Once I get back into OS X, I press the green arrow to start the system, but it crashes my system yet again before I can even see the Windows load up screen.
I think my issue may be that I have the ATI card. Have the developers gotten one to test on yet?
Anyway, here are my specs one more time I'll add a couple other things in case those might be the issues:
Mac Pro
2.66GHz
2 GB Ram
ATI x1900XT
Bluetooth Apple Keyboard and Apple
Apple Airport/Bluetooth hardware
Connected to internet through ethernet wired port
Dual screen setup 24" monitors
That's all I can think of that might be affecting Parallels. So, ya, any updates from the developers on if they got ATI cards yet and if that might be the issue would be cool.
Good luck!