Robert_Charlton - 1:00 am on Feb 13, 2012 (gmt 0)
We also found out that all of the 3000 pages in the blog had the rel=canonical tag pointing to the home page of the site.
Additionally, this was would have caused major problems by itself, and in this case could well have overridden everything else. I'm trying to think what Googlebot scratching its head would look like. This would have caused a lot of confusion.