title: TeamCity, no clean-up for certain configuration. No pinned builds, no dependent builds
body: <p>I'm running TeamCity 5.  I have one particular configuration that is preserving 3500+ past builds, with artifacts, from the last year or so.  It's taking up almost 7 gigs of space so I need to clean up old builds. </p>
  
  <p>The configuration is set to clean up everything older than 30 days or 5 builds.  None of the builds are pinned.  No configurations on the server depend on the artifacts, and even if they did I have un-set "Prevent dependency artifacts clean-up".  Other build configurations clean up, but this particular one doesn't.  </p>
  
  <p>Anybody have ideas on what to check next?</p>