When I got broadband, I thought pages were loading rather slowly in IE, so I switched to Firefox and I noticed a major increase in speed.

Most of the 0.9 themes are very, very ugly. Phoenity Neo hasn't been ported yet, which I need ;_;.

And tabbed browsing is one of the best things I like about it. When I ever use IE, I keep trying to third mouse button click links and nothing happens.