Internet Question

INTERNET QUESTION….As long as I’m blogging anyway, here’s a question for any internet gurus in the audience. Last night, for about 15 minutes, I was able to surf the web just fine but my browser wouldn’t display graphics. Not a single graphic of any kind, regardless of whether it was a site I had visited before or not. Everything else was fine.

This has now happened to me three or four times, and it never lasts more than a few minutes. Can anyone explain why this happens?