Here's the issue. It's happening very very often that I'll get "Server not Found" errors when trying to access any particular website. The weird thing is that if I press Refresh after getting the error it works. Can anyone perhaps guide me to find what problem might be causing this? It's becoming a pain having to hit REFRESH to access websites...Thanks,Giaco

Hello, I think you're using Internet Explorer 7.0, i have this problem with IE 7.0 after opening a new page it take a few second to load if i write any website it gave me Error"Server not Found"

This could be related to the proxy server you are using or perhaps the website is behind a poorly functioning load balancer. I realize it's been some time since you posted this, but I'm curious if it has been resolved now.

it looks like this may be the cause of your problem.. Not having the PDC setup as the only dns server? http://forums.windowsitpro.com/web/forum/messageview.aspx?catid=54&threadid=42133&enterthread=y