I have to imagine that group to be pretty small by now, though. Most PCs with specs good enough to still be useful now run W7 64-bit about as well as they do XP

I have to imagine that group to be pretty small by now, though. Most PCs with specs good enough to still be useful now run W7 64-bit about as well as they do XP SP3 (an old C2D box of mine feels great under 7, as an anecdote), and for those who’ve been running Linux on these boxes there’s not really much reason to go for a 32-bit build over a 64-bit one.