Are your Discussion responses posting twice this evening?

Tweet

I have noticed this evening that responses to a number of discussions appear more than once. I first thought that the people were double posting for more points. But I just posted to a discussion and got an hour glass on my cursor that just sat so I just went to something else I was working on and came back about 5 minutes later and found the hourglass gone and my comment not posted. I clicked post again and it posted twice. Has this happened to you?