A few weeks back I was on somewhere online (haha, you'd think i was intoxicated cause i really can't recall where) and saw mention of a browser described as an alternative to Firefox. It wasn't Opera, Camino, IE, or Safari. It did very much have the look of a stripped down Firefox. I even visited their site and thought I had it bookmarked to download later on, but I guess I didn't.
Update to latest Gecko engine 1.8.1.10. Also includes the new Update Checker Plugin, which is automatically checking for new releases once a week (can be disabled in the plugin preferences).