Since installing Parallels 8, my CPU usage has gone through the roof! All 8 virtual cores are running at over 50% and the temperature of my new Retina MBP (16GB RAM 756GB SSD) is so high that the fans are making a lot of noise trying to drive down the temperature. Previously this machine has been totally silent in operation... I think I will have to revert to Parallels 7 until this issue is fixed - I cannot allow my machine to run this hot for long. Anyone else seeing this problem since upgrading to 8?