I had Parallels 5, to run the odd extra OS for giggles and sometimes practical reasons. At work they have VMWare for the odd XP program. Eventually, they both annoyed me with their bloated nature. I dunno about you guys but I downloaded VirtualBox, and I am very impressed with it to say it's free. With Parallels, running Windows XP with 1GB of ram, my fans would blow franticly. The same on VirtualBox, and everything is smooth, it is so lightweight, has all the features and supports OS's a lot more than Parallels and VMWare. What do you think? Was it a mistake me buying Parallels 5?