The mask still exists for firefox-bin on amd64 (no-multilib); however, the package uses a 64-bit version of the binary from mozilla, since 5.0: *firefox-bin-5.0 (26 Jun 2011) 26 Jun 2011; Nirbheek Chauhan (nirbheek) +firefox-bin-5.0.ebuild, +files/firefox-bin-prefs.js: Bump to 5.0, we now install the 64-bit build for amd64 instead of the 32-bit build with emul x86 libs Reproducible: Always
+ 11 Jul 2011; Nirbheek Chauhan <nirbheek@gentoo.org> + arch/amd64/no-multilib/package.mask: + Unmask tb/fx/sm-bin on no-multilib since they now install 64-bit binary + tarballs on amd64, bug 374757 + Thanks for reporting!