Gemini23 - 8:55 pm on May 24, 2012 (gmt 0)
I am not aware of anything specific happening...
It was around the time of a new template that my wordpress guy created but he assures me that this wouldn't have done it.
It was also around the time of a 'backup' which preceded the new template. But I understand the backup just creates the backup in the 'blog' folder (and I can see the backup there).
the blog itself is (and has been for a couple of years) in the format of www.example.com/blog/index.php/thursday24052012.html etc
and the dozens of new 404 pages not found showing as
and the new folder seems to have generated a sitemap or at least was shown in my Google Webmaster Tools account as being the source of the links for the 'blogging' folder!