just thought I'd update everyone...
457 lodged online on 30/10/2015, offshore
Approval received 27/11/15, Brisbane Office
was told by employer that turnaround time for previous applications was about 2 weeks. Not sure why mine took almost 4 weeks. Had the only single request for information such as passport, marriage, birth certs and health insurance cert. perhaps it's the end of the year...everyone's in a holiday mood?
good luck to everyone else waiting!