@paranaense, whatever is wrong with your copy of firefox, it has nothing to do with your TeX installation, nor this bug. Please file a bug report against the firefox package.
Anyway, Steve Langasek has reported this issue to Debian, which appears to be the upstream maintainer. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/775546 Title: /usr/sbin/update-language-def: line 779: printf: missing unicode digit for \u -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs