enigma1 - 8:03 am on Apr 2, 2012 (gmt 0)
You need to get rid of the errors. These are links the bot somehow follows and point to 404 pages. And you you don't want bots to get sessions. If you deployed 301 redirects make sure they point to pages that return 200 OK. Not to 404s and don't do mixed redirects (301 to 302 etc).
Also not all errors are reported in GWT and I can only guess the suggestion section in GWT would report another 30K?
As of the zc forums these are public forums, where the developers would concentrate on core bugs not customizations.