title: clearing user data on logout with parse
body: <p>Every time I log the current user out using <code>[PFUser logout];</code> It logs out, and goes to the login view that I have set up, but when I log in with another user, the profile view still has the same name as the last user, I'm a little confused since I have the text labels set to this:</p>
  
  <pre><code>self.usernameLabel = [[UILabel alloc] initWithFrame:CGRectMake(16, 230, 288, 21)];
  [self.usernameLabel setTextAlignment:NSTextAlignmentCenter];
  self.usernameLabel.text = [[PFUser currentUser] objectForKey:@"username"];
  </code></pre>