That's not dumbing it down.....that definitely helps!
As I recall, there is a bug in the phpBB software that causes that problem. I'll let Ronald, our forum code expert weigh in here, but I believe this means we need to log in at the forum board level and not the individual sub-forum/topic level. As long as you check the box that says to keep you logged in, there shouldn't be a problem.
Ronald, if I've mis-remembered this, please correct!