yes it is (hopefully)
i can't wait to see x64 dual core tweaked firefox
some reason firefox unexpectedly freezes my whole computer if i close a tab (Normally happens if i'm in 'YTMND mode' with about 3 ytmnd's loading up and i close one of them for whatever reason)
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Although saying that, logitech haven't made any x64 drivers for their webcams leaving my lovely little one in the dark..... and it's not for lack of demand, there are whole forums and websites dedicated to pestering logitech for x64 drivers they keep saying soon, for over 3 years now, comparisons have been made and the most detailed answer back from them has been that Microsoft did something to USB so it works faster in an x64 environment but in doing so buggered up something allowing them to make drivers for video devices easily
/ 
