DNS problem in Fedora 11

[Masood]

Hi
Today, all the sudden every application on a up to date Fedora 11 (with
update-testing enabled) gives "Unable to resolve domain name". However, the
network seems to be functional as ping and nslookup works and everything in
a virtual machine runs with no problem.

I have tried reboot and it didn't fix anything. Any thought?

Regards,
Masood
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