quaerereverum, you were clicking on a link to the thread in question. The thread was moved to the new forum after the last post on the 14th. By clicking on the link you were taken to the thread as it stands now in the new forum and have added to it. The arrow icon means that the thread has been moved to a more appropriate forum.
vBulletin 2.3.0 is therefore not 'hosed'.
