it depeneds on a number of things, make sure you dont have a . at the end of the url when you type it into the browser as this will give you a gray bar, if you want to check if you are banned from google, go to
www.google.com and type in yourdomain.tld and if it is banned it will say Sorry, no information is available for the URL, also if your site is new it may just be that google hasnt crawled it yet, i know that phpnuke.org was banned from google over the past few days not sure why. when you checked to see if you are and you find out that you are banned you can drop google an email and ask them why your banned,
http://www.google.com/support/bin/re...ebmaster&hl=en but before asking them check here to see if your question is already answerd:
http://www.google.com/webmasters/2.html