title: named pipe callback takes 10 seconds?
body: <p>got wcf dll with client and server classes wraping it.</p>
  
  <p>when my server uses callback it takes over 10 seconds for my client to get it..</p>
  
  <p>what is going on?</p>
  
  <p>only got simplest NetNamedPipeBinding endpoint.</p>
  
  <p>got lots of code so I'm not sure what to paste here.</p>
  
  <p>what can cause such a long time.</p>
  
  <p>EDIT:
  only first callback takes 10 seconds..</p>
  
  <p>after this it works fast.</p>
  
  <p>any one knows why?</p>