During my TRIAL evaluation of Parallels Desktop 5 the software behaved very well and Virtual Machines ran at a normal pace. A few days after buying an Upgrade though, the performance of my virtual machines has become sporadic and unusable. Nothing I seem to do changes the operation of the virtual machines. They seem to go from hyper fast to ultra slow and blocked. The overall effect is that the VM's are completely worthless. Can someone please help me get back to the Parallels Desktop 5 I had before.
