If you open safari, or any webpage that has a link with "print this" for example a yahoo map, or google map page, and click the print link... while parallels is open, you will get an instant kernel panic. This happens every single time, and it's been tested on 4 office computers now
Confirmation on Macbook Pro Rev C Motherboard I can confirm this. Had been running a long time (couple of hours) with no problem then went to print something out of Textedit - BOOM - kernal panic.
Guys, please stop reproducing Your Macs don't deserve such panics. Yes, threre is such problem. And the next update of PW will have it fixed.