After upgrading to Ubuntu Feisty Fawn, I discovered that Eye of Gnome (v2.18.1) no longer displayed vertical photos imported with Edgy Eft (or before) vertically. This seriously cramped my photo-reviewing style.
Curiously, Nautilus didn’t break a sweat:
Taking a look at Eye of Gnome’s preferences, I found an “Automatic orientation” option checked.
Seemed like that’s what I wanted. But I unchecked it just to see what would happen. Nothing. Until I opened a new instance of Eye of Gnome. Problem solved.
The good news is this fix doesn’t seem to affect images imported after upgrading to Feisty Fawn—which I’m assuming is due to the new “Rotate images physically” option in the photo importer.