It looks like the http://austpost.vcsweb.com/ server is back up for now. I'll have to check out the new 'ozpost' module and look at what it will take to upgrade to it - I made quite a few modifications to the 'austpost improved' module to fix a few issues with the particular store I was setting up (and to improve things like the images and issues with those being truncated in the order invoices, etc).

It's good to see that the new 'ozpost' module has better handling to "fail gracefully".