Submitting a post at the exact same time as another user causes a double post.

Draygo

http://forums.penny-arcade.com/discussion/comment/20754072#Comment_20754072
And the following 2 posts.

I would note that when i submitted the post i only clicked on post reply once. I did not double click, I did not refresh. When i clicked post my screen showed me the post in the middle of my double post.

Found it very odd.

Draygo

Actually don't know whats going on here exactly. I refreshed the page and the double post is missing, but then i have another double post with the exact same circimstances on the same page. Is this just a caching issue?

Edit: On a third refresh my second double post disappeared. It seems like it is indeed a caching issue. I wonder what would have happened if i actually edited my double post. If i did would it have left a message there?

Fyndir

Have seen this happen, if you try to edit one of the false double posts it starts editing the one that will actually remain after you refresh.

Raneados

I don't know the exact cause of it, but often times it'll APPEAR to double post, then one of them will delete itself after a few seconds, mostly if you just let it go, it'll fix itself