You are viewing a single comment's thread:
there is more than 1 hour between the posts, so hardly a network error!
It has happened to me sometimes (count that 3 or less in all), that I've edited a typo or something trivial in a post, and see a double post has been created. I think this may be front-end related.
It can happen ofcourse, but should be treated the same or none should be downvoted.