That happens only if you are using ISO-8859-1 as charset. As a workarround, you can change your default locale to UTF-8 and the dead keys will work again.
-- brazilian abnt2 keyboard problems after upgrade from dapper to edgy https://launchpad.net/bugs/68740 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
