I've had a number of problems appear on my laptop at the same time, which makes me think they must be related. So far today, even though I have not knowingly made any changes to my computer, the following has happened:
Some internet pages (including Hotmail) load blank.
The Search Companion in Windows is blank.
Some automatic redirects didn't happen.
System Restore doesn't load.
When I move the cursor over a button and click it, the button depresses but nothing happens.
Clicking "Help and Support" in the Start menu gives no response.