i am having a pc with specs amd phenom 6 core 3.2ghz 4gb ram xfx ati radeon hd 5770 1gb and windows 7 sp1 ultimate 64bit genuine fonts eg:in facebook and all pages google etc are blurred...and not readable.firefox 3.6 is working perfectly also firefox 4 beta2 was working fine.. wat may be d problem..its definitely problem with firefox,as internet explorer,safari,opera hv no problem at all