Did anyone else have problems with late mail before xmass by Australia Post ?

Nov - Dec 2012 will go down the worst for us.  Australia Post failed to deliver our mail from the 30th Nov, 3rd Dec, 6th Dec, 8th Dec, and 10th Dec before christmas.

it is only now that mail from the 30th Nov is arriving to people, yet mail onwards from the 11th of Dec  has already arrived.