g1smd - 9:23 pm on Mar 13, 2012 (gmt 0)
In Google's webmaster blog they mention that the "blocked by robots" list has been removed from the "crawl errors" section and will shortly re-appear in the "site configuration" section - because many of the URLs in the "blocked by robots" list aren't actually errors, the webmaster purposely blocked that access.
On one site I am now seeing 410 responses actually reported as 410 in WMT reports. Good stuff. That's been a long time coming.