I am running 8.10 alpha2 (amazingly stable, I might add) and have a small problem with the photo screensaver. On my 1920x1080 screen, all my photos are stretched horizontally rather horrifically. The ones from flikr didn't seem to have any issues. I have been pouring through every config setting I can see and even went through database tables just now but to no avail. Any ideas where I can fix this?
What resolution are your source images?
All the best