user profile not loaded

Hi there
I've got a recurring problem with Vista. When I turn the computer on
sometimes, I enter my password and it loads a screen that doesn't have
any of my settings on and then the error message 'user profile not
loaded....' appears. I have viewed a fiew forums with posts about this
problem and have followed the advice of restarting, F8, safe mode,
system restore.
This solves the problem, but it keeps occurring every couple of weeks
now.
I have also noticed that when I turn the computer off, a message
appears about ccc.exe before it turns off. Not sure if this is related.
I'd really appreciate any ideas about a permanent fix for this as it's
really frustrating having to do a system restore all the time.
I'm not particularly techy ( as you'll probably guess from the way I've
written everything down!) so please keep it simple in the replies!!!
Many many many thanks in anticipation
Sally


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sallymc