Looks like I've found a bug in Panther. I created a new user account for my son and set it to use Simple Finder. From the list of applications I wanted to limit him to, I unchecked everything then checked Marble Blast OSX (that came free with .Mac a while ago). However as soon as I switch to the Picture tab then back, the game gets unchecked. If I choose to Allow All applications, switch to the Picture tab and then back to Limitation, a bunch of them are unchecked. How can I fix this?