Ohspareme,
OZ super IS still taxed (you won't see it in your statement as the fund itself pays it)
From the ato website:
"You will be taxed on concessional contributions over the $50,000 cap at a rate of 31.5%. This is on top of the 15% tax paid by the fund. You can ask your super fund to release money to pay this excess contributions tax."
http://www.ato.gov.au/super/content....&mfp=&st=&cy=1