I spoke too soon about Firefox 7

The memory leaks are still there, just improved. It still eventually takes over my (admittedly underpowered and outdated) system. I guess I'll take another look at Chrome, though I still prefer Firefox's superior extensions library, excellent bookmarking system, configurability, and the way it makes pinned tabs sticky.

Update: As if I'm really going to leave Firefox. No, I'm sticking with it. They did make a big improvement in the memory leaks so that I have to restart it maybe every two hours instead of every twenty minutes. I've stayed with Firefox this long through the last version or two with abysmal memory leaks, I'll certainly stay now. Especially since the Smooth Gestures developers proved themselves untrustworthy by making their extension spyware. Update: Now I'm not so sure. It definitely swells up, but when I recently tried switching to Chrome again I noted that Gmail and Google Reader (which I have as pinned tabs wherever I am) tend to swell up in memory usage over time in that browser, so that may be the source of the memory loss over time (especially since Chrome ends up using just as much memory as Firefox 7 overall). I also noticed that with Firefox 7 the memory loss has a ceiling, so it isn't really a leak.