title: Tomcat randomly shuts down with an AbstractProtocol pause after mild usage
body: <p>After running my webapp for a while (timing varies between hours and days depending on traffic) Tomcat seemingly randomly shuts itself down. There's nothing out of the ordinary in the log before this happens (no exceptions) just normal INFO stuff that my app emits. </p>
  
  <p>Can anyone help on how best to debug this? Is there anything in Tomcat that would trigger the <code>AbstractProtocol pause</code> signal? </p>
  
  <p>Logs:</p>
  
  <pre><code>09-Nov-2011 21:40:19 org.apache.coyote.AbstractProtocol pause
  INFO: Pausing ProtocolHandler ["http-bio-80"]
  09-Nov-2011 21:40:20 org.apache.coyote.AbstractProtocol pause
  INFO: Pausing ProtocolHandler ["ajp-bio-8009"]
  09-Nov-2011 21:40:21 org.apache.catalina.core.StandardService stopInternal
  INFO: Stopping service Catalina
  </code></pre>
  
  <p>Java version: 1.6.0_25-b06
  Tomcat version:6</p>