Vista hanging up at 'log off' message and not shutting down
I've taken a look at Vista user sites and other geek sites and see that I am not alone with this problem. However, none of the answers given on any such sites have worked for me (nor for the many others complaining about the same problem).
Problem: I have a computer running on Vista Business version. If I switch it on and simply check my emails, it usually shuts down normally.
However, if I've had it on for a while and have used multiple applications, often as not, it either takes a very long time to shut down or hangs up at the "logging off" page and does not progress from there. I've left it, thinking it was shutting down, and come back three or fours hours later to find it is still hung up on the "logging off" page.
Has anyone else found an answer to this problem?