Got to add my backing to the above comments. Couldn't get on here for the last couple of nights. VERY VERY SLOW this afternoon, to the extent that this will be my last post this afternoon as I have better things to do than sit and wait for the screen to change.
New forumers will NOT hang around to see if things improve- they will assume that it is always like this and won't bother any more.
As was previously said the total lack of response from the forum administrators is just plain rude. If they know the forum is running slow they should add a post explaining the problem and likely time scale for it to be sorted not wait for forumers to add complaining posts which are then ignored.