In big boards, those updates are really a problem. If you think %99.9 of users are the small forum owners, than this may be the problem. Ajax updates are resource hogs. And yet there's no better recent topics mod other than yours. Without auto-updates, its still the best. I gladly pay for this but for every update, i'll have to contact with you and get an update. Is it ok for you to make this option baseline if I pay?
It still makes a query when the page loads. And it's enough to increase my query times to 5 seconds.