Photos roll

Let me guess, this happens when your looking at the pictures in landscape mode (phone is horizontal) and they just keep rolling by?  Have you tried viewing them with the phone laying flat on a table?  Does it continue to roll through them when you do so?  If they do, it probably means there is something wrong with your accelerometer (and what the phone perceives as level is actually not correct).  If that's the case then you are probably up the proverbial creek as far as I know, sorry.

If they do not roll through when the phone is laying on the table it could mean that you are not holding the phone level when looking at pictures and the phone thinks you want to scroll through the pictures...fix there is to hold the phone more level, or figure out where "level" is for the phone!