[prof1515]

I've had the same thing happen on occassions. In each instance, my internet has blinked out for a just a second while I was submitting the post and when it reestablished a second later it seemed to resulted in my browser posting again. From my end all I saw was the little pop-up window on my task bar showing an established connection but when I looked at the forums there were two identical posts. It's like digital cloning!