Ihave DSC f717 And it started giving me this same problem! It hase nothing ot do witha memory stick! I have used 3 different once of variable capacity.No luck. I have no idea what to do. No help from sony. I am also realy upset! I wasn\'t an aggressive photographer and used it twice a week or less for an hour. So where is a reliability!? I think that instead of paying half price for repaire I\'ll just through it in the pool (i live on 11th floor). I never really liked sony and now surelly I do even less!!! I will never buy anything from them again.
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