Sally_Stitts - 5:40 am on Sep 21, 2012 (gmt 0)

Similar thing here.
In Webmaster Tools, under Health - Crawl Errors - Site Errors
All day long, I get -
DNS - Couldn't communicate with the DNS server
Server Connectivity - Request timed out or site is blocking Google, and
Robots.txt Fetch - Crawl postponed because Robots.txt was inaccessible.

I contacted my host, and they said there is no issue on our end.

All regular pages are working just fine.
Is Google messing up here?
.