I'm trying out the new Firefox 3.1 betas, and noticed this while reading Antony's blog:
Antony's blog has featured CSS3 drop shadows for quite some time now, and if I'm not mistaken, even Konqueror 2 running on my Mandrake 8 (ca. 2001) machine could render them. Seems like the Mozilla guys only recently implemented this particular functionality of CSS3, which I have to say is pretty long overdue at this point.
In all honesty, I have to wonder if the internal politics of the Mozilla development hierarchy are becoming inefficient now that they've gone commercial...