Thanks for the info! I think the cookie/cache reason explained why virtually all major websites (millions hits/day) redirect naked domain to "www." subdomain.

Thanks for the info! I think the cookie/cache reason explained why virtually all major websites (millions hits/day) redirect naked domain to "www." subdomain. I also found the following info from here http://blog.bigcurl.de/2008/08/redirect-naked-domains-to-subdomain-in.html http://blog.bigcurl.de/2008/08/redirect-naked-domains-to-sub... "That is why I wrote redirector. It is a little application which redirects all the apps in your Google Apps account from a naked domain name to a subdomain. Eg. bigcurl.de --> www.bigcurl.de If you want it can also do this vice versa but be aware that you are not taking advantage of Googles geocaching mechanism with this approach." So using "www." domain for GAE seems to be a better solution if one wants faster access/response.