This was mentioned on one of the Carl Palmer threads, but I thought it should be pinned: Don't go to that site (esspecially not if you're on Internet Explorer, which is more vulnerable) and delete it if you have it as a bookmark. What's there appears to be the SMART virus, one of those fake-alert things that shuts your computer down (see bleepingcomputer.com or details).
Like some people here I learned the hard way a while back (but didn't realize thats where it was). I was luckily able to get rid of it using Combo Fix after the usual fixes like Malware Bytes didn't get it.
Of course it may be gone by now, but I am not about to check.
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