title: Random NoClassDefFound error in Web Application
body: <p>Wondering if any guru out there could shed an idea on why the following randomly happens.</p>
  
  <p>We have a web application we deploy in Jetty 6.1.26 running on a Linux installation with JRE 1.7_03</p>
  
  <p>Not every time, but every now and then, when Jetty starts up - what appears to be a random class (from our project) seems to be the source of a NoClassDefFound error. If we restart Jetty they problem disappears. </p>
  
  <p>The only pattern that occurs seems to be the classes at the root of the error are populated via JAXB annotations. </p>
  
  <p>To give more of an idea of the frequency it feels this happens 1/50 times, if that. </p>
  
  <p>I would be interested to know the how and the why for this error.</p>