No problem. I am aware that it may seem more than a little far fetched, but you would agree that generally if a problem exceeds certain size (in terms of correction cost), it becomes easier to ignore it than to admit it. This is what made me thinking that the culprit may not amount to a simple "smoking gun" as a brand or an emulsion number. Also, why is nobody puzzled by the fact that recently Ilford changed all their film packaging design? It is a great service to the photographers, since now one can easily be alerted to look up the expiration date, when buying a film.