Qantas: The Bad Ol' Days Return?

The Sydney-Dallas Qantas flight QF7 was forced to return on Monday, due to on-board system faults.
This was the third Qantas aircraft diverted in less than 24 hours...and soooo reminiscent of the long run of faults that Qantas never quite laid-to-rest in 2011.

Qantas says this technical fault impacted seat power, in-flight entertainment system and some of the toilets: "While the aircraft could have continued flying safely to Dallas, the decision was made to return to Sydney in the interests of passenger comfort, on what is a long flight." The plane was about four hours into its journey when it turned back. The Sydney-Dallas route is the world's longest non-stop route, taking 14 hours 50 to the US, and 15 hours 30 on the return flight.
In an eventful 24 hours, two other Qantas planes made emergency landings at Perth, in one case with dozens of passengers needing medical treatment. Crew noticed an unusual odour,and all passengers disembarked after the unscheduled landing. While Qantas denies any reports of passengers being affected, St John Ambulance paramedics treated 75 people at the airport for smoke inhalation.
Yea....and nothing happened? Riiiiiiiight!
Earlier, a Dubai-Sydney Qantas A380 was diverted to Perth when the air conditioning crapped out over the Indian Ocean.
So, Qantas...is it a case of "Here we go again?"