I've got zoneminder 1.25 installed on 12.04 LTS 64 bit, and it's working fine, but seems to capure many events (modect, idle setting) with short durations. Some captures are only seconds apart, and when I watch an event, I don't see the person walk all the way through the room, sometimes it stops with them partway through.

How can I make the event captures longer (so there are fewer of them, but they catch everything).