I just upgraded to Firefox 4(after being lazy for more than a month since I said I will do it).
I know I have a lot of tabs opened all the time, and firefox 3.6 sometimes consumed 50% of my CPU for no reason. Oh, and it also consumed about 700 mb with all these tabs...
But, surprise! Firefox 4 seems to be worse: it went up to 1,2 gb of RAM with the same things opened. And it still consumes a lot of CPU power. Argh.
[EDIT] Also, what's with wrong with the text? It's not pleasant to read with such a "skinny" text:
I mean, in Firefox 3.6 the text was "normal". Has a new feature been added or something?
[EDIT2] Found the problem. It's because Windows ClearType. But it was already turned on, so I don't really see what's the actual problem.
[EDIT3] Oh wait, it doesn't affect at all the text in Firefox, or in Chrome. Although on the Firefox help page this is what it tells me to do.