Any crashing is most likely broken extensions/plugins/profile related, rather than any core FF issue (assuming you're running the latest stable release).
While it might be easier just running to another browser, in all fairness if you don't try fixing it you've hardly given it a chance.
Memory usage could be improved though, and claiming some of it is a "feature" (i.e. gobbled by the bfcache) is ludicrous.
By the same token, the 1.8 branch (i.e. what'll become Firefox 2) builds have been more stable and less thirsty of late - for comparison, I've got 10 tabs open in it using 96412kB, and a tab with nothing but the default homepage (MSN UK) open in IE using 55780kB. Similarly Firefox has double the VM size with 10 times the tabs.
Hamish said:
Here are a couple of reasons to switch!
Tile all your tabs:
There's a Firefox extension for that, for what it's worth. Can't remember the name though.
Personally, I found Opera's
UI to be bloated compared to Firefox (I don't need a torrent client, mouse gestures and all the other bits that float around), but IE7's shaping up nicely - especially the improvements to CSS rendering that have been made. Horses for courses, and all that.