Which version of IE are you using ? It happened to me once when the server crushed . Let's try this way , open internet explorer , go to tool,then click on internet options,then connections and then click on LAN settings or just setting if you are using a modem ( make sure to left-click once on the connection you are using right now if you have multiple connections ).After getting into LAN settings , check if the " automatically detect IP " is clicked or is it manually configured.As in my case , it was manually configured. Meanwhile, press ctrl+alt+dlt and see how is your cpu being used.If it's being used 100% that can be the reason.Sometimes the speed goes down or you see server not found when there's a problem with the line coming to your house ( maybe the line got cut ) . If you know that your ISP uses static Ip's, just contact your isp and ask them about your problem...have you seen any message when you browse from internet explorer or have you just seen the loading bar loading loading loading zzz ? Have you tried with other websites ? Maybe your connection is too slow... :( do you use other browsers like Netscape or opera?