aakk9999 - 9:07 pm on Apr 28, 2011 (gmt 0)
I presume you can see your site in browser normally?
So if you try to fetch as Googlebot via WMT, what do you get? Do you get the message "Your request was completed successfully" at the top of the screen? And after this, when you refresh the WMT page, what do you see under "Status" column for this fetch request (if it appears there at all). You could get something like "Success", "Not found", "Denied by robots" or similar.
Also, have you checked your robots.txt? Have you tried checking your homepage in WMT under Site Configuration >> Crawler access to make sure it is allowable?
All this failing, have you tried to change user agent to Googlebot and tried to fetch the page via the browser?