It was particularly frustrating for me since I was working from home...
I rang all their call center numbers, getting the overloaded signal each time. I rang the dial-up support number but the guy I talked to there didn't know anything about the problem... at least that was until he tried to transfer me to the broadband helpdesk and found it overloaded.
I wonder if all other ISP's were affected?
I guess not as ihug isn't showing any outages on their website and the xtra website well that isn't loading at all!