I'm having problems my "Time and Date" preferences. I can't access them. It will say "Loading Time & Date" and it will stall. I have to force quit because it won't respond. I just get a beach ball. Has this happened to anyone else before? I don't get why it does this. I've reinstalled the operating system a half dozen times and don't install anything bad. Any suggestions or ways I can correct this without reinstalling the OS again?