Sydney is a lot warmer than up here, didn't get above 5 the other day, bloody freezing. I've been up in Coffs for over 3 weeks, got up to 23, and they call that winter, glad I took shorts. Felt silly packing them though.
Oh, I should add that ADSL 2 isn't available in the mountains yet, I think Penrith have it though. (base of the mountains)