Comment 3 for bug 41886

(nor assign them, for that matter)

Please check the md5sum and size of the file you downloaded against the one in the Sources file (apt-cache showsrc), and try downloading it using a web browser or some other method. Try to get someone else to independently confirm the problem.

It could be a corrupt file on the Australian mirror, or it could be a problem with a transparent proxy or otherwise beyond their control.