You know the little photo icon that you see for your different user accounts when you login to OSX? I keep trying to change mine and when I restart my computer or log back in, it will change back to the previous picture it was set to. I'm running Lion 10.7.2 on a 11" MacBook Air (2011). I previously had a MacBook Pro that I had everything backed-up to an external drive. When I upgraded to the Air, I plugged in my drive to restore it from Time Machine, so the user account from that backup is the one I'm using. The User profile picture that I had on that Mac is the one that it keeps changing back to even after changing it to something else when I restart my computer, or wake it up from sleep. The worst part is that when it changes the picture back to the flower that it was before, it looks so pixely in the log-in screen.