I didn't mean to imply that it happened exclusively with the photo package -- that is just where it happened to me and I was trying to add a few data points.
I have installed the same aolserver 4.x debs in a chroot on another machine along with openacs 5.0 core + photo-album and a few other packages, and have uploaded several albums.
It only happened to me once -- but, when tracking stuff like this, I think it always helps to have as many data points to eliminate as many variables as possible.