The ebuild for www-client/firefox-10.0.7 was removed for a "Version bump." according to the ChangeLog. As firefox-10.0.7 was the highest stable x86 ebuild this results in a version downgrade to 10.0.6 for no reason as far as I can tell. Reproducible: Always
+ 28 Nov 2012; Lars Wendler <polynomial-c@gentoo.org> +firefox-10.0.7.ebuild: + Restored accidently removed 10.0.7 ebuild. Thanks to Mark Davies for + reporting this in bug #445079. + That was my fault. Sorry for all the trouble I caused to the x86 stable users.