Can’t access to certain sites.

I wonder why some site I can't go and some I can go. We don't have firewall and any other similiar software here. Eg site can't go.

http://www.aspmessageboard.com/
http://www.asp101.com/

It just keep loading so long period of time.

When access those sites from server, no problem but no from the client.

I also realize that when I key in my user id and password and check the "Auto login", it seems doesn't work. I mean the next time I access to that site, I need to key in user id and password again. I think this is can be the cause, is it? How to set my IE to make solve this?

Thanks for any help.