I have a web site stored in my bookmarks and visit it regularly. For some reason for the last several weeks I have been getting a message that says "Safari can’t open the page “http://www.ripdifferent.com/mtr/” because Safari can’t find the server “www.ripdifferent.com”. Now this is happening on my G5 desktop but if I go downstairs to our wireless laptop I can log on to the site with no problem. What has happened that I can't log on from my desktop computer?