Help Please. All recent photos and music are missing.

Question

All photos and music loaded after 2005 are missing. It is almost as if all settings have reverted to a time in late 2005. iPhoto has old photographs present, but no recent photos. However, recent history in Safari is listed correctly. Also, Mail is asking to setup account information, as if this is the first time it has been used. I've explored the possibility of someone creating a new user, or changing home user or home user name or short name, and that has not happened. I've also checked the trash. I've also logged out and in several times.
Thank you.

Answer 1

Problem solved.
It seems that someone in my family accidentally moved the "library" folder out of the home directory and onto the desktop. Who know when it happened, but I guess once I logged out and back in either a new library was created, or more likely an older library folder was found and used. I renamed that folder to an unusable version, dragged the correct "library" back to the home directory, re-started and was in business.