Fairly frequently, in the past 6-8 months, I "wake" my iMac to find that there are icons noted in the various Mail areas. Triangle with an exclamation point in it. It informs me that I'm not connected to the Internet.
After an hour with Apple support recently, she told me that I AM connected to the internet but could not tell me why this was happening.
When this happens, I RESTART, and it clears. Any clues to what this is