It seems that someone doesn't like me, for whatever reason, because three answers of mine have been downvoted in less than one minute the Mar 19 at 8:45 (votes corrected now):
And three other answers of mine also have been downvoted 11h ago:
My answers were well-received (only one of them hadn't any upvotes, but I admit I was a little too categorical in this one, and another one had only 1 upvote). Still, I don't know if this is personal, or if this is some algorithm that is automatically downvoting some random answers.
What could be the possible reason for this? Had my past behavior on PSE created some defiance against me?