title: PyQt program startup is very slow on Ubuntu
body: <p>When I run the following example of PyQt code in Terminal:</p>
  
  <pre><code>#coding = utf8
  import sys
  from PyQt4 import QtGui
  
  app = QtGui.QApplication(sys.argv)
  widget = QtGui.QWidget()
  widget.resize(250, 150)
  widget.setWindowTitle('simple')
  widget.show()
  sys.exit(app.exec_())
  </code></pre>
  
  <p>I got the following messages:</p>
  
  <pre><code>Got bus address:  "unix:abstract=/tmp/dbus-i0C7rhmhFB,guid=6b91faa5b449dbb3ca941d6e0000001d" 
  Connected to accessibility bus at:  "unix:abstract=/tmp/dbus-i0C7rhmhFB,guid=6b91faa5b449dbb3ca941d6e0000001d" 
  Registered DEC:  true 
  Error in contacting registry 
  "org.freedesktop.DBus.Error.NoReply" 
  "Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken." 
  Could not query active accessibility event listeners. 
  Registered event listener change listener:  true 
  </code></pre>
  
  <p>The window shows after about 20 seconds. I think it should be very quickly to show an empty window. How to solve this problem?</p>
  
  <p>Here is the version information:</p>
  
  <ul>
  <li>ubuntu 12.04 LTS 64bit</li>
  <li>Python 2.7.3rc2</li>
  <li>QT 4.8.0 &amp; PyQT 4.9.1</li>
  </ul>