Jbob - 3:06 pm on Mar 18, 2008 (gmt 0)
The same thing happened to my site last October. I have been having trouble with unintentional duplicate content (due to site architecture) and i think that must be the cause as i havent done anything intentional to warrant Google bannning me. Homepage still ranks for some of my main keywords (based on backlinks) but apart from that the entire sites content seems to have been banned. I have contacted Google twice through the webmaster tools but haven't heard a peep. Not a good situation to be in.