Well considering VB
is a pretty cool program it does need some attention once in a while. In the ACP at the bottom of the functions list is Maintenance. That has all the functions for running a smooth setup. Repair and Optimize Tables is one I run on my site once a month with out fail. That keeps the database neat and tidy and running smoothly. The rest of the functions under Update Counters needs to be run on a forum of this size and age at least once a week. All but the one that says don't unless you really have to. The rest update posts and threads and things of that nature.
It's not a fire and forget type of software. It needs a little TLC once in a while.