Yes... it may have been something the server host has done to the server after the security breach. A bit like airport security - to prevent a future problem it gets beefed up for a while.
But the posts show up straight away (if you open up a new window and look at that topic), so it just appears to be the "reply" of the database with the followup screen that proves that it was posted.
In other words, you can close that tab or window if you want, but check first that it was posted (which is quicker to do than waiting for a response from the database).
Hopefully it is just a temporary measure.
I noted a few moments of connectivity issues over the weekend but just assumed it was related to my connection.
I don't have the 'not seeing a new post' problem, but I seem to have stopped receiving email alerts to new posts in subscribed topics...
Which brings us to where we are today...
I sometimes have to hit the post button twice, which then tells me that I've done a multiple posting. So it seems like the post is being made, but for some reason it won't refresh for me, but rather just stalls.
Glad I'm not the only one
I too have the page hanging when posting issue. Not sure what it could be
If you notice the page hanging though, just open a new tab and check your post is in the thread, then you can just close the hung tab.