I work with an Olympus camera and 2 type cards Hama SmartMedia 128MB. Frequent save the data on card reader systems shows the Hama card after a few months mistake. This must be remedied only by formatting the card. In the first Hama card I still believed in a coincidence, but after a short time this error occurred even when the second card. The Camera is technically ok Conclusion: More expensive Fehlkauf