I did a clean install of 12.04.3 but once I run the update manager the system hangs at the Ubuntu ..... screen after rebooting.
I have tried re-installing, updating to correct video drivers, etc. and the system works fine. It is only after I run update manager that the system fails to reboot.
What is strange is that I was not having this problem a few months ago.
I do not know how to troubleshoot this issue, any advice would be wonderful!