I tried to post and got the error message that my last post was less than 120 seconds ago. When I went "back," the post was gone and I had to recreate it. I waited until I was sure it was more than 2 minutes and tried to post again. This time it said I had already submitted the same post and perhaps I had double clicked! So, I checked to see if it had gone through after all, but it hadn't!!! Then I recreated it again, made a couple of slight changes (like an extra space between a couple of items) to make sure it wasn't identical, and then it finally worked.
Number 1, if the only problem was posting too soon, why wouldn't the message still be there to post later?
Number 2, either it was posted or not. How could it say I had already posted it, when clearly it wasn't there?