It took me a while to get put up because Flickr kept crashing. (If you have no need of excruciating technical details, stop reading.)
Okay, so it was the Flash player that was crashing, not Flickr (but it was crashing on loading the picture page in Flickr.) I had figured out a few weeks ago to upgrade to the latest version of Flash (I'm running Mozilla on Linux). That seemed to solve the problem.
Then the crash came back. Using the handy --debug switch on mozilla to start it in a debugger, I was quickly pointed to an old version of Flash in my ~/.mozilla directory. Deleting that version of Flash solved the problem. And now the world can resume peeking into my breakfasting habits.
