A while ago I suddenly had trouble connecting with Safari, after getting email with Eudora a few minutes earlier.
Network Diagnostics reported OK status (green light) on Built-in Ethernet, Network Settings, and ISP, but orange or red on Internet and Server.
Cured by rebooting my router.
But I would still like to know the cause. My guess was a glitch in the ISP's DNS server. I did find it a bit odd that I had an OK connection to the ISP but not to the internet.
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