I can confirm this bug in Firefox in Ubuntu. I've been trying to fix it but no one knows how to fix it:
http://gnomesupport.org/forums/viewtopic.php?p=52331 http://gnomesupport.org/forums/viewtopic.php?p=50371 http://ubuntuforums.org/showthread.php?t=211827 http://ubuntuforums.org/showthread.php?t=20976&page=13 http://ubuntuforums.org/showthread.php?t=91280&page=3 http://www.bsdforums.org/forums/showthread.php?t=37791 http://www.bsdforums.org/forums/showthread.php?t=39561 http://www.bsdforums.org/forums/showthread.php?t=37182 -- firefox is not honoring /etc/fonts/local.conf settings https://launchpad.net/bugs/42955 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs