My server (Ubuntu Server 13.10) has been hanging on boot since sometime shortly after I upgraded from 13.04. I still haven't been able to pinpoint a cause.

The server does eventually finish booting, but not until these errors are logged:
Code:
[   28.391645] init: failsafe main process (849) killed by TERM signal
Code:
Jan  6 23:35:56 localhost failsafe: Failsafe of 120 seconds reached.
Is there any way to force extra logging during init, so that I can see which process had PID 849 at the time? This message is extremely unhelpful on its own.

Thanks!