While a foggy morning causes delays, at QF the schedule is normally back to normal by the afternoon. This is because everyone involved at the airport sees that the weather is unpredictable and they get on with the job, when everything starts to happen.
Yesterday in MEL the schedule was stuffed well until almost midnight. It would be fair to say the schedule never got back to normal. QF25 MEL-AKL-LAX std:1030ish atd:1830 to AKL, and std of 1555 ex AKL atd 2335. That is one example. Most of the International flights ex MEL for QF were delayed around 6 hours or more.
The weather would have been the main cause for these delays, but the LAME's o/t ban would have also contributed. If one section can ban o/t and it has such an effect, that means that area is cut to the bone. If the company gets by, by relying on o/t then when it falls in a heap they shouldn't be surprised.
On a positive note for QF QF9 MEL-SIN-LHR was only 45mins or so late yesterday. That's the closet it's been to schedule for most of the week.