Anyways I've been having trouble standing up and being counted with the new online system, so I started trolling their updates and advisorys when I found this tid bit.
Good on them for allowing non-ie browsers, and non-windows OS's to work, when clearly their was no technical reason to block them out. I think the best comment was this:
"With the addition of this new operating system, the capacity of the Census Help Line operators to respond to technical calls from open source users may be limited. However, we expect this will not be a major obstacle for the vast majority of these users.