Exception handling

Hi, I've been playing around with exception handling. How are you supposed to handle fatal exceptions in view construction? If I register my errorhandler and cause an exception after the page has rendered (e.g. in a valuechangelistener), my Notification.show works fine but apparently if the exception is thrown in the view constructor, the handler is hit but the notification fails to show (page too broken?). Also, I noticed that an UI-level errorhandler is not hit but one set in the session is hit...

Thanks in advance,
  Nik

Tried moving the stuff that could go wrong to View.enter but still no go :-/