All websites can be open with internet explorere. But, when I use firefox, I can either open cnn.com or usatoday.com. If I open cnn first, I can not open usatoday.com. If I open usatoday.comm, I can not open cnn.com. I wonder why the internet works fo

I can open all web site with "explorer". But, when I use firefox, I am unable to open all websites. For example if I use firefox to open webpages, it either allows to open cnn.com or usatoday.com. If I open cnn.com first, the firefox does not allow me to open usatoday.com or if I open usatoday.com, firfox does not all ow me to open cnn.com == URL of affected sites == http://cnn.com usatoday.com