I think the noapic is actually a viable workaround for me. The two freezes I mentioned above seem unrelated, due to low memory conditions while running VMs. For now it looks like the noapic command has stabilized my ethernet.
-- NETDEV WATCHDOG: eth0 (via-rhine): transmit queue 0 timed out https://bugs.launchpad.net/bugs/454747 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