Instead of preventing, why not simply detect, and compensate accordingly in your calculations. If you register for the time change notification, you'll be told when the time changes, and by how much. Use this information to adjust your calculations for how long the user has been doing the tasks.
Note that there is also a launch code sent out to all applications when the time is changed, but that this does not include information on how the time was changed. Use the notification instead. -- Peter Epstein -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/tech/support/forums/
