I also have the same problem. I performed an upgrade of SME 5.0 to 5.1.2 and after the system re-started it hangs at "starting bootstrap-console". I thought it was a glitch in the upgrade so I performed a fresh install with the same result. So I decided to load SME 5.1.2 on a completely different system and it as well hangs on "starting bootstrap-console". I have also noticed that 5.1.2 is unable to load the usb driver reporting module dependancies. If you prevent the bootstrap-console script from loading, the server does not boot. Any suggestions on fixing this problem?