As a follow-up to the last comment, APT actually hangs near the end of the terminal history log. In particular, it locks up without consuming any CPU. This is definitely what an infinite loop would do.
-- Terminating APT results in /var/lib/dpkg/lock being permanently unavailable https://bugs.launchpad.net/bugs/625676 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