Cairns, Mackay & Rockhamptom airspace, as well as parts of NSW and QLD enroute, have all gone TIBA numerous times over the last couple of weeks as well. It's actually disgraceful that Airservices can't provide an air traffic service. I'm also surprised the media hasn't caught wind that aircraft are flying through airspace with no air traffic control (not even the level of service that Class G has).