You do know that JIMROB and staff have been working on installing some new servers, don’t you?
That is what has been causing the double posts, I believe.
Double-posts have a myriad of causes. I've encountered every single one of them. Mostly it's a bad mouse, an apple-mouse (that your kids reset improperly), a micro-soft mouse (that you, yourself reset improperly), an old mouse not compatible with the current motherboard, a local overloaded server on Cox cable (as they relocate stuff to make way for massive communications and electrical supply infrastructure for whatever the local military base is doing), etc.
Sometimes it's on JimRob's end ~ sometimes it's just California.
Double posts don't worry me.