denisl - 6:42 pm on Apr 2, 2013 (gmt 0)
Have just tried the googlebot test on sitemap.xml and gives the error "unreachable robots.txt". I thought it was a good sugestion of yours Str82u as I didnt think they would access robots before downloading the sitemap.
For every other file it gives the same robots error.
I'm still waiting for a further response from the hosting company but something happened on the 13th.
I notice that WMT crawl stats show that the number of files downloaded since the 13th have dropped from a few thousand to a few hundred, but download times are around the same.