Only two months ago I wrote about experiencing an aborted take-off due to engine failure on a Canberra to Brisbane flight, but it's happened again! We didn't get as far as beginning our take-off roll this time, but the net effect was the same - re-booked on a flight through Sydney which wasted several hours of my Saturday.
Once is bad luck, twice seems like a pattern. I think Qantas need to look at the maintenance schedule on their 737-400's which are getting on a bit now. I went through this with Qantas in 2000-01 when I was regularly flying between Brisbane and Manila and their 767's seemed to be constantly breaking down.