Ok, seriously MS, enough already!
I was working on a login form. Finally got everything aligned the way I wanted it with floats and all that. It looked great in IE and FF.
This is what it looked like:

Then I added a hidden form element…let me repeat: HIDDEN form element. HIDDEN. In case you don’t get the point I’m trying to make, the element was HIDDEN. This happened:

Moving the hiddent element to the end of the form fixed the issue… but I mean, really. Is that necessary??? It’s …wait for it….HIDDEN!