Thank you. Thats exactly what I needed. Downloaded the csv and was able to find the referring URLS and track back to the offending page.. Searched my site and voila - silly me put a trailing slash after the file prefix in the sitemap.. must have really messed up the robot.
so I had:
<loc>http://www.wickman.net.au/wineauction/wine_auction_alert.aspx/</loc>
Ooops.. I think I like this SEOMoz place already 
