My iMac was Shut Down properly, there was no interruption or manual force shut down. It was just Shut Down normally. But when I turned it back on a few minutes later, it took a really long time to load and then there was a status bar at the bottom for its progress. I have never ever seen this happen before in the 6 months that I have had this iMac. Then when it finally finished booting. It said "Safe Boot" under where I sign in with my password to access the desktop. And the mouse and keyboard were not recognized by the Bluetooth for a few seconds, and messages popped up notifying me of that. Does anybody know why this happened? I am very puzzled-- Is something wrong with my Mac or did something happen to it while it was shut down, becasue it was perfectly normal prior to. Also, doing any kind of search functions doesnt work either. I am trying to search for programs/files in the upper right corner, and nothing comes up. Thanks in advance.