Have a look here.
http://coolthingoftheday.blogspot.com/2009/05/story-of-windows-7-and-empty-all.html
If I click on All Programs and then on C drive, it'll open up with a blank page and then a green bar starts moving slowly across the top. When it gets to the end, it just sits there.
Pictures, Games and Music do the same thing. Games is blank and no green bar.
The CPU, according to the meter, is running at about 1 or 2 %. Checking with Task Manager, nothing else is running.
The only way to get it to work, is to Log Off and then Log back on. It'll be OK for a while and then does it again.
Any ideas.

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