I have an iMac DV SE (OS 9.0.4) and use the Multiple Users feature to limit access by my kids. I updated to version 1.3 of Multiple Users Software using the Software Update control panel, and all was well for a while. Suddenly, the password screen no longer appears at startup. In addition, when I try to open the Mult. Users control panel, I do not get the window that allows me to adjust the user preferences. All I see is my desktop and a menu across the top of the screen, which only allows me to Quit. I have tried searching for previous posts on this subject. The only thing I could find was a suggestion to use TechTool Pro (which I currently don't have). Is there an easy way to reinstall a new copy of this control panel? Any other suggestions would be appreciated.