I just upgraded from Parallels 3 to 5. I never had this problem with ver3 but when I start using Parallels and Windows applications my whole computer slows down and drags. Any suggestions? Can I change the memory settings to help this issue? I am using a Mac Book Pro 10.6.2 with a 2.4 GHz Intel Core 2 Duo Processor 3Gb 667 Mhz DDR2 SDRAM Memory.