I'm seeing EXACTLY the same behavior. I set my "Keep X Connection Up" to 100 (I'm on a 1.7Ghz on an OC3 pipe so it should be an issue), and what did i see? I Flurry of connections CONNECTING, then after a few seconds to a minute, being dropped (presumable because either the Incoming or Outgoing I/O messages dropped spiked too high).

Any ideas on this?