Again, michaela.

As you said, I should contact to MS support.

Befor that, I really want to know the symptoms you'd had(new link below).

http://farm2.static.flickr.com/1419/712698991_568a03b43f.jpg?v=0

Mine is CPU Drop down to 0~20%, and occurs...

Hi, michaela. Thank you very much for your reply.

In kb, it says

Status

Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the "Applies to"...