Also, after I saved this new discussion entry, the page stayed as "creating... " even after saving. When I tried to leave it gave me the same warning you get when you try to leave with unsaved data. The comment was saved, though.
I guess this is a usual hiccup of the LiquidThreads extension. Have not had this in a long time but obviously it can still happen. I am afraid that there is not much I can do about it.