Believe it or not, we were able to isolate & fix the freezing bug. Turned out to be a problem with modal dialog boxes that were created from the application menu on OSX with Java 1.4.1. Thanks very much for the help in finding this problem, stief.

Unfortunately we didn't find what was causing the oddity of the list disappearing on the second open of the about window. Since it's not causing a terrible program freeze, and the credits are still listed on the first display (and always visible from other OSes), the fix for this will probably be in the 3.6 series.

Thanks!!