I recently bought a box of long expired ortho litho film, thinking this film is so slow it probably won't be affected very much. I was wrong. There was a good deal of fog, which I could print through, but there were also clumps of circular spots in various sizes. Most were near the edges of the film, but there were plenty in the image area, too. I know it wasn't my processing, because I was processing it side by side with fresh ortho litho film, and the fresh film had no problems.
I guess I can use this film in strips to test developer and fixer activity. This would give me a life time supply. I'm also kind of discouraged to try my luck with expired film again.