It seems Microsoft Bing isn't doing so well this evening. http://www.bing.com/
On each refresh, I receive a message like:
Ref A: 357bf3f4244348b59339ec9220af1257 Ref B: 01D5D1617DBB772F4C77D54C43995845 Ref C: Wed Apr 24 21:13:31 2013 PST
Ref A and Ref B change on each refresh, and the timestamp updates.
Same response in an incognito window. Seattle.