Experiencing the following problems - taking video for approximately 1 hour continuous - file size use to reach about 2 gigabytes - more recently the files have been hitting 4 gigabytes for just 20 minutes or so. I did inadvertently format the 16 gig SD cards using my Win7 PC. However I reformatted them using the camera format-er. But files still getting exceptionally large. First question is did I destroy the SD cards by formatting them in Win7? What file size would you expect to see for 1 hour of video? Is there a switch in the camera that I set wrong causing the larger file size? Thanks for any help you can provide.