Same here - unable to register. Working fine for weeks before this, last successful call through au vox was 13th.
OzVoipStatus lists the following outages, including a current one.
Code:
Start Finish Length(D:H:M:S)
2009-10-15 08:35:42 00:00
2009-10-14 21:45:48 2009-10-14 21:54:35 08:47
2009-10-11 08:56:25 2009-10-11 14:27:20 05:30
2009-09-15 18:47:07 2009-09-15 19:44:37 57:30
2009-09-05 10:40:20 2009-09-05 10:47:08 06:48
The website seems ok though, can logon and view account details. That's probably US-based though?