I have to agree to the latest reviews. Version 3 isn’t bad in general, and I’ve been waiting hopefully for improvements in coming updates (http://www.versiontracker.com/php/feedback/article.php?story=20080626050651629), but:

It is still really very slow. Rendering webpages is OK mostly, but for example »flying« over bookmarks in created folders within the bookmarks toolbar feels completely terrible.

I can’t recover any improvement. My reviews, wishes, tips and everything else I sent to the mozilla foundation are neither answered nor realized.

None of the »no big problems« in my review mentioned above have been solved.

In general, Firefox is still my favorite browser, but if the development keeps going this way … :-(