This same scenario has happened with three different internet connections. At first each internet connection works fine.
This is from the same machine?
To test Michael's DNS theory, if you don't have the files I mentioned above try putting 188.8.131.52 and/or 184.108.40.206 into your Domain Name Server settings in Network for the interface you're using.
Edit - In Terminal type "sudo crontab -l" (the letter L, and minus the quotes), hit Return, enter your password. It should return "crontab: no crontab for root". Anything else and your DNS settings have been compromised.
Xplain's use of MacNews, AppleCentral and AppleExpo are not affiliated with Apple, Inc. MacTech is a registered trademark of Xplain Corporation. AppleCentral, MacNews, Xplain, "The journal of Apple technology", Apple Expo, Explain It, MacDev, MacDev-1, THINK Reference, NetProfessional, MacTech Central, MacTech Domains, MacForge, and the MacTutorMan are trademarks or service marks of Xplain Corp. Sprocket is a registered trademark of eSprocket Corp. Other trademarks and copyrights appearing in this printing or software remain the property of their respective holders.
All contents are Copyright 1984-2010 by Xplain Corporation. All rights reserved. Theme designed by Icreon.