I cannot find an option to set pagination (how many messages should be shown on one page) in my settings. But while i’m not logged in, then there is no paginatio at all and everything is shown on one page. And i like it and want to have in my profile, because SBS pagination is buggy (doesnt go to last page in Firefox while opening from email notification, doesnt go to last page after posting the message) and current pagination setting is too low for me.
One could simply say that some threads are too long. Everything which has more than 5 replies may be too hard to follow anyway.
Maybe 4.x did solve a lot of these problems.