Ya I want to say either springer or SO posted a thread about how people should be opening a new tab and checking recent/new sections to see if it had
posted or not before clicking again.
there was a message about it somwhere if you leave the page blank and open up another tab it will be there, I gather they are trying to fix a few
things and it's affecting others in the process.
It was Sceptic who already gave the details a day or so ago on 'Boards', it appears to be a server problem.
It happens sometimes in just normal posting anyway, and has done for some time. Use your browser and open a new page, and look see if your post/thread
has appeared before you hit the 'post' button again.