title: iOS how to remove back button?
body: <p>I have an application with a navigation bar that pushes to a login screen view controller and then pushes to a main menu. Is there any way I can remove the back button off the main menu, so the user is unable to go back to the login screen? </p>
  
  <p>Thanks!</p>
  
  <p>EDIT: Using Xcode 4.3 and doing all the leg work programmatically.</p>