To me it does seem to have something to do with the capacity though. Lots of reports about 'no problems with my old 1GB SD card'. Obviously 1GB SD cards are usually also of some older manufacturing type, which may have something to do with it (different voltages or whatever). I'm still using my (problem-free) 1GB cards, I hope to be able to go to an internal 32GB SDHC at some stage but before that can happen this corruption issue must be resolved.