It took awhile; I sent the film to Ilford & eventually they sent it back to me and said they couldn't explain the spots. They also sent some fresh rolls of Pan F 120 and I've exposed and processed a few in Rodinal with no problems. This is 2014 expiry. Recently I processed one of the older 2013 rolls in Xtol and had the same spots. I have one sealed roll from this batch and I'm planning to post that to Ilford. i wonder if I'm the only one who's had this problem?
Have you tried exposing a roll in a regular camera to see if the spots are still there? Or develope a roll in other developer to see if the spots are still there? Just curious. I have 200 ft of bulk 35mm that I have to use and am interested in the outcome.