It is a pity that the windows OS becomes slower and slower.
OK I have Ubuntu 64 running on one machine and Vist 64 running on another and to tell the truth they run neck to neck. But then again I guess it depends on the system you are using too. I am A+ and a systems service tech and a qualified geek especially when it comes to my machines. so quad cores and ddr2 are the norm for my machines. If you are trying to use a cele and 512 of ram, Well!!!! Its gonna be slow.