Firefox 9, astonishingly enough, survived the weekend sitting totally quiescent on my office machine. Release 8 achieved this very rarely, and crashed shortly after anyway. Congratulations to somebody. Its VSZ is almost 2G, and its RSS is 1.5G, but I don't care -- I have 16G here! But I do wonder what it needs all that RSS for. On my laptop running the amd64 build, it blows right past 2G (at VSZ 2.8G, RSS 1G atm) and thrashes abominably.
You know what they say, though: "If you're not experiencing abominations, are you sure you're alive?"
My great achievement in the final days of 2011 was to replace the motherboard in my son's craigslist-$80 simulator box for $60 plus $11 for a quieter fan, enabling upgrade from a P4 to an old Core2.