I have the same problem. Ever since I started downloading my photos onto my new computer with windows 7 ultimate my photos just like yours come out corrupted. Just a few out of the bunch. Sometimes they are half gray, or mulitcolored; some are a 1/4 corrupted or 1/4 to 1/2 transparent. I tried the placed the same photos on my XP pro computer and didn't have a problem. I believe this an endemic problem with windows 7. What else could it be? I had my video card changed but it didn't make any difference. I have no other explanation except that windows 7 is the problem. Are you reading this Microsoft?