The machine had been rebooted using a grml rescue disk and after that I used ubuntu-bug to report this...
-- plymouth main process (341) killed by SEGV signal https://bugs.launchpad.net/bugs/571258 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs