URI: 
  HTML can't_open_display
  HTML can_not_open_display
  HTML diagnosing_problems_with_x11_over_ssh
  HTML gdm_slave_xioerror_handler_fatal_x_error
  HTML id_x_respawning_too_fast_disabled_for_5_minutes
  HTML refresh_rate_problem
  HTML reinstalling_x11_and_gnome_in_rhel
  HTML switchboard