Set it to 900 seconds (15 minutes, <cough>CREE</cough>) and let's see what happens.
It's possible this could be our threshold problem and nothing is really telling us. It's almost like a throttle control. The engine can do a lot more, but the underlying software is saying "Hell no."
Oh, do me a favor. No more worm-infested SQL boxes coming on the network, mkay?