i also had a .fonts.conf and renaming it so it's not used for fonts helped for firefox... fonts are now much better in firefox. my .fonts.conf was from 2004-10-23... so in my case it's not from ubuntu. i've carried my home directory from other linux distros. the file was probably created by mandrake.
-- Semi-random ugly font rendering in Edgy (no font hinting) https://launchpad.net/bugs/63403 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs