I've been using Firefox since 2.0
I'm using 3.5.2 now and all of the sudden, sites won't load their CSS anymore. Like Google Reader for instance. Or ikariam.org once logged in. All the colors and images you get are those defined in HTML.
I have Opera 9.64 and IE8 on my machine too, and they work just fine.
I had to make this question in a different browser because firefox won't load the code buttons above the textbox anymore... what the hell is going on here?
EDIT: I ended up re-installing firefox. Good thing I use Weave and backed up my addons...