I don't know if it's a widespread issue, but when I tried using my LaCie/Lightscribe firewire DVD, it froze Windows instantly. If it's unplugged all goes well. Plug it in, and all freezes. Took me a while to figure out the culprit.
Well, it shouldn't freeze, but firewire is not supported by Parallels. Plugging it in should just have no effect. Is this the beta or release build?