Can someone please help me fix my Internet access.

I use Ubuntu/KDE and connect through a wifi router. I've had this configuration for years. Today, I lost all access to the Internet suddenly, while I was browsing.

I can connect to the router with the browser, which rules out any communication problem between the desktop and the router.

I can browse the Web via wifi and the same router with a Palm handheld device, which rules out problems with my ISP.

I rebooted the desktop and the problem persists.

I don't know what else to do. I can't ping anything, it *seems* that the desktop can't resolve, but I am not sure. I replaced the OpenDNS numbers with my ISP default ones in resolv.conf, but that didn't fix it either.

Please advise.

Now it's working. Had to change DNS and reboot three times to make it work - still have no idea how.