Ah ok.
Well, until about July 2010, I think, or maybe before, the topic pages showed 100 topics per page, then it was lowered to 50 to reduce 500 Internal Server errors, which worked, although the forum activity increased later, so errors started again. On the new host, 100 would be OK, but it may take a bit longer to load on old computers. From people point of view, I guess we're letting things as they are, then.