Its not just their computers. It does run beyond close down - seen it many times. Not a big issue for me. In terms of resource usage I think Chrome wins hands down
I think maybe 3.5.2 fixed whatever it was doing to hog memory and become barely responsive. No problems with 3.5.2 yet.
my biggest firefox gripe, is with the newest edition of shockwave and paypal, it always crashes. BUt does not with IE. This is with windows 7 final
I've been reading a number of other threads on other forums and it suggests a dodgy plug-in, however i've un-installed all the add-ons and still no success. Is there an archive of previous FF versions somewhere as i've never had these problems before... perhaps its best to go back in time!