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This question seems to have two accepted answers - @Felix's was accepted on January 1, 2001.

Is this a known bug? It doesn't seem a duplicate of this bug, which has its roots in a race condition.

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I was originally going to link some earlier reports like this, but this is something completely different. For the record, that timestamp is the same as what happens when a deleted user has acceptance, in case that points anything out. The timeline shows the answer as unaccepted, so something must've glitched to keep it still labeled as such. –  Grace Note Jan 26 '11 at 20:31
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Another case popped up just a few hours before you asked this question: meta.stackexchange.com/questions/53096/… –  Pops Jan 26 '11 at 20:37
    
@Pop good catch. Must be related to some recent change –  Pëkka Jan 26 '11 at 20:40
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Roots in a race condition? The time difference is 22 seconds, I wouldn't expect the SO hardware to be that slow. –  BalusC Jan 26 '11 at 20:45
    
@BalusC ah, it was just Pollyanna's suspicion, not official word. I misread. –  Pëkka Jan 26 '11 at 20:47
    
@Jeff status-completed, but how? –  Won't Feb 7 '11 at 15:31
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@will sql is a hell of a drug –  Jeff Atwood Feb 8 '11 at 5:29

2 Answers 2

up vote 1 down vote accepted

Seen this on SO (lost the link immediately). Could be an issue with a merge between questions that had answers, or an answer being accepted after a merge but before the user refreshed the merged question. Or it could be aliens.

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Aliens with... cosmic rays?! –  Pops Jan 28 '11 at 20:45

I could have sworn that this was a dupe, but I can't find one. If I recall correctly, January 1, 2001 is a special date for Stack Exchange. (To be more specific, it's 01/01/01 at 0000 hours.) It shows up sometimes in migrations and other situations where, say, an action on a post predates the post's creation date.

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