Innocent pictures of your own young kids in the bath etc have been deemed kiddie porn.
Keep your backups up to date and NEVER give your storage hard drive to anyone. If the unit goes in for repair then pull the hard drive. They are cheaper than being deemed a pornographer - which will ruin you life. If you cannot pull the hard drive/storage device scrap the unit with gunfire. If you are tech savvy enough to wipe the device do it, in spades. Oh and the above goes for units passing out of your control.
The album "Nevermind" by the rock group Nirvana features a picture of a naked child on the cover. The millions who purchased this album are guilty of possesion of child porn. Right?