Hi, I sent my MacBook Pro for repair via the Apple Care process. It was a video card issue, so there should have been no need to log into any of the user accounts. I was wondering if there was a way to check and see if someone logged into my user account or some other way check if someone accessed any of my files, keychain, etc. when the computer was out of my hands? Is there a log kept somewhere in OS X or anywhere? Thanks.