title: QAction shortcut doesnt always work
body: <p>I have a Qaction on a menu item for deleting selected items in one of my views.  Here is how i create the action:</p>
  
  <pre><code>deleteAct = new QAction( tr("Delete Selected"), this);
  deleteAct-&gt;setShortcut(QKeySequence::Delete);
  connect(deleteAct, SIGNAL(triggered()), this, SLOT(deleteSelected()));  
  </code></pre>
  
  <p>I setup a keyboard shortcut (Delete Key) which should trigger the delectAct action.  It works most of the time but at some points it stops working... Does anyone know why the shortcut would stop working? </p>
  
  <p>Note: the action still works if i trigger it from the menu item. Its just the shortcut that doesn't...</p>