Arrr's right. The only sites I've had problems with Firefox are websites I have problems with IE anyway.
Obviously our experiences differ. That doesn't make me wrong. Firefox does NOT display many of the sites I frequent properly. IE does. That's the bottom line. You can say it's the coders' fault or whatever you want. If I was using Netscape 1.0 and none of the sites I went to worked would you tell me that the coders are all doing it wrong? Of course not. You'd just tell me to get a new browser that shows the sites properly. IE has better compatibility than Firefox. That's pretty much a fact.
IE just seems sloppy (and buggy, and full of security holes). Firefox has never crashed on me like IE did, it's as fast as or faster on pretty much every page I compared the two.
If you haven't used IE in forever, how can you really make a comparisson? Yesterday, Firefox not only crashed itself, but it crashed my computer. The newest version of IE and the newest version of Firefox (which I have been using side-by-side for days) are about the same in terms of speed. Some load faster in Firefox, others load faster in IE.