If possible use separate HDDs for your different Virtual OSs. On my AMD 64 system if I ran 2 virtual OSs(One Slackware and another Gentoo) it would thrash like crazy. Maybe more ran(I had 1GB) could have taken care of the problem, but from the logs etc., I could make out that 3 OSs(1 real 2 virtual) accessing the same HDD is not really a good idea.
If you are okay with a huge motherboard, go for a dual processor unit and use 2 quad cores.
__________________ .--- ..- ... - - .-- --- -- --- .-. . -.. .- -.-- ... - --- --. --- !! |