I'm using 12.04 in dual boot with windows 7. I can't recall when this started but sometime in the past 2 months approximately, if I try to shut down or restart the computer from within Ubuntu, it only logs off my current session. I cannot force it to actually shut down without doing a hard stop (ie: power button).
I haven't been tweaking the system in any odd way so I don't know how this got introduced. I do need to shut down or restart when I want to enter the windows world for work purposes. Otherwise, the computer is almost always on in Ubuntu and used for general purpose computing & provides in-home media repository.
Any ideas of how to correct this would be appreciated as I hate to repetitively need to do hard restarts. Thank you.