Yes I have checked the status of Suna traffic and it always says its working. I tried driving in other areas of Sydney to see if it was a just reception in one area that was a problem. I can receive Mix FM, the station that used to show up as the carrier fine. I have since spoken to Navman support who wants me to do a full reload of the software, which I will do when I get a chance.
As to other peoples comments about the use of the Traffic services. I do not think you can rely on the traffic service alone. I use traffic screen to and from work as a warning of potential problems. Its great if you want to listern to a cd/ipod and still get traffic updates. It also allows earlier alerts of potential problems before the radio traffic which might not be on for anouther 10-15 minutes.
Sometimes reported problems are not worth worrying about or are not problems once you get there. Other times I have saved a lot of time by adjusting my route to get around them. Often If I see a problem come up on the GPS that I think might be a big problem I can surf the radio channels to confirm with radio traffic reports.