I'm following the simple instructions on this site for installing Boxee and XBMC but wondered if its still safe after the recent firmware update.
http://technochubby.com/2009/01/14/howto-install-boxee-xbmc-on-apple-tv/#more-110
http://technochubby.com/2009/01/14/howto-install-boxee-xbmc-on-apple-tv/#more-110