The calendar view lists a few images for a day, say, 4, but when I click on the day, it displays less, often none at all.

I'm using Windows Vista and Firefox 3, but this bug was already present two years ago on Windows XP and whatever Firefox version was current then.

In Opera things show up correctly.

Strange... I'm using the same software, but I didn't have any problem with the list by date for July. Are you using the latest version of Firefox?

Yes, I checked, no newer available.

But now the listing works for me, too. Well, I hope it stays that way.