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An answer of mine was downvoted and instead of decreasing my rep by 2 points it increased by 2 points. The downvoter removed his downvote. I did a recalc and the 2 points were removed from my rep.

This looks like a bug.

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On what site? What you see in the reputation tab of your profile page? –  Shadow Wizard Apr 4 '12 at 7:23
    
@ShaDowWizArd: On Stackoverflow.com. I didn't see anything in the reputation tab. Maybe I did not wait long enough. –  juergen d Apr 4 '12 at 7:24
    
Hmm.. where exactly did you see that +2 of reputation? –  Shadow Wizard Apr 4 '12 at 7:41
    
@ShaDowWizArd: On the top bar of the Stackoverflow site and on my profile site. –  juergen d Apr 4 '12 at 7:50
    
Hmm.. maybe race condition in the new reputation calculation system. OK, I leave it for mod/dev to investigate. :) –  Shadow Wizard Apr 4 '12 at 7:53
    
On which user? On SO I see no recalc that lowered your reputation in the past several days...I do however see a recalc that increased your reputation, after a post which had a downvote was deleted. –  Nick Craver Apr 4 '12 at 11:54
    
@NickCraver: I am talking about this user: juergen d. I noticed the decribed behaviour while answering to this question: stackoverflow.com/questions/10006171/… –  juergen d Apr 4 '12 at 12:19
    
@NickCraver: After the downvote my rep increaded from 6017 to 6019. A few minutes later the downvoter removed the vote. After that I triggered a recalc and the rep got back to 6017. –  juergen d Apr 4 '12 at 12:21

1 Answer 1

up vote 9 down vote accepted

This happened because the post in question was deleted then undeleted. When either of these happens we sync up rep within 5 minutes...you simply did not wait 5 minutes.

Timeline:

  • 2012-04-04 06:51:47Z Post was downvoted (-2)
  • 2012-04-04 06:52:34Z Post was deleted
  • 2012-04-04 06:53:37Z Rep sync performed (+2)
  • 2012-04-04 06:54:29Z Post was undeleted
  • 2012-04-04 06:55:24Z Post was undownvoted (+2 - not correct, that's why we perform a sync)
  • 2012-04-04 06:57:52Z You triggered a rep recalc (-2)
  • 2012-04-04 06:58:35Z The system would have done the same -2 adjustment

Everything is working as it should here, you simply didn't wait for the 5 minute time period, which is how often we process these sync batches.

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