I have started getting DNS error page not available ONLY on Yahoo, Google, and Excite. There may be others that I've not yet come across. If I close down I.E. browser and clear temporary internet files, then re-open the browser (without disconnecting from my ISP),they become accessible. However, if I open a new page, or log on again from new, I get the error messages again, and have to clear the temporary files to access the aforementioned sites. Can anyone help?