This is due to mozilla-locale-zh-cn depending on mozilla-browser (<< 2:1.6.1). And mozilla-brower is already at version 2:1.7.13. So the source package needs to be updated. But as Debian also has the same old version, I don't think there is much can be done.
-- [UNMETDEPS] mozilla-locale-zh-cn has unmet dependencies https://launchpad.net/bugs/41533 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs