Since I've had above-average time to kill today, I did some research on the memory efficiency of IE7 viz-a-viz FF3. I put the two browsers through a series of duplicate motions and the results were startling. I must confess I've got to contradict one of my earlier observations.
Startlingly, FF3 was at least 26% more memory efficient than IE7. As if that wasn't enough, the memory occupancy of IE even immediately upon launch was much higher than Firefox's. This was astounding since the higher lever of FF's abstraction forces it to rely on its own services rather than on the services provided by Windows. IE, on the other hand, is tightly integrated with Windows services and was thus expected to have a lower memory footprint. Any explainations for that?
The test obviously wasn't exhaustive enough and thus can't lend sufficient credibility to the conclusions. Perhaps using them for hours on end under strictly similar conditions would yield different results. The fact remains, however, that my test proved me wrong. My only gripe against FF should now meet its rightful end.
Well, I wasn't about to junk FF anyway!