title: Npgsql: Timeout while getting a connection from the pool
body: <p>Background: I'm moving my application from mssql to npgsql v2.0.11.92. 
  After a few minutes or hours of running my application, I get a <strong>System.Exception: Timeout while getting a connection from the pool</strong>.</p>
  
  <p>I'm using lib version 2.0.11.92 in x86 environment on x64 platform. All connections are closed and disposed in finally block at the latest, but after a while, I receive the error. So, it should be a problem of the Npgsql library.</p>
  
  <p>In my application, there are lots of queries happening in the background every few seconds, but most of the times, they're just running sequentially, not in paralell.</p>
  
  <p>My used connection string is:
  SERVER=mydbserver;MINPOOLSIZE=3;MaxPoolSize=15;ConnectionLifeTime=7;DATABASE=Test DB;UID=user;PWD=pass</p>
  
  <p>I'm trying to diagnose leaking postgres connections in npgsql.</p>
  
  <p>FYI: <strong>The Npgsql library had already got a leaking problem which has been fixed in latest version 2.0.11.92. But still there are some problems, I assume.</strong></p>
  
  <p>Has anybody experienced similar problems with the current library version (npgsql v2.0.11.92) ?</p>