Seeing the behavior described in comment 0 on Gentoo, Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.0.1) Gecko/2008081113 Gentoo Firefox/3.0.1.
Seeing expected behavior on trunk, Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b1pre) Gecko/20080915020339 Minefield/3.1b1pre.
Seeing the behavior described in comment 0 on Gentoo, Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.0.1) Gecko/2008081113 Gentoo Firefox/3.0.1.
Seeing expected behavior on trunk, Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b1pre) Gecko/200809150 20339 Minefield/3.1b1pre.