laggy performance

[Urkle]

There is a possibility it is 10.5 being the cause.. As there have been many reports of 10.5 being slower than 10.4. A lot of it pointing to issues with Time Machine.

Though it does seem strange that it would run slow like that on your 2.2 Ghz macbook pro. the two systems I thoroughly tested on are a dual 2Ghz Mac Pro(10.4, Nvidia 7300 & ati X1900) and a 2.1Ghz macbook pro. (10.5, ati x1650)