firefox version 32 installs right out of the box and seems to work fine on xp x64,
just downloaded it from mozilla after getting sick of chrome crashing from consuming all it's address space for each tab/process resulting in low virtual memory warnigns and huge 8/9gb+ pagefile and all but 60-70mb of 4gb ram left with just chrome running, even scrolling up and down a page would result in the pagefile usage graph steadily curving upwards (setting laa on 32bit mad it worse same for installing 64 version)