There is a thread about the turnaround of the e-tax returns. You could assume that once submitted that the ATO would handle the same as the e-tax ones, I could be completely wrong though.

We are finding the male returns are coming in first, then up to a week for the female, this is due to reconciling with the FAO to ensure there is not debt there to be settled. (well that is assuming you receive some form of FTB etc)