Several posters have reported significant stalling in the posting process. This is currently being looked into, including ways to optimize and clean up the forum. A possible reason for the stalls is the ever increasing banning lists of random generated spam bot users (dozens every day) that the forum server runs through upon posting.
Usually one can assume that a submitted post has gone through after a few seconds. Refreshing the forum afterwards usually displays the submitted post, despite the apparent stalling. However, it is adviced to select all your text and take a copy before posting (Ctrl+A and Ctrl+C), in case the post isn't properly submitted. This is also handy in case of other time-outs, if you have been composing a text for a while - which is even more frustrating to lose.
Again, this will hopefully improve soon.
Regards,
- Siggy