If you have an iCal "To Do" that has been marked as complete, synced to a Nokia 7370 phone, then marked as "not completed" on the phone and synced again, the "due date" of the event may be changed to exactly two weeks into the future.
Apple has identified this as a limitation of the phone device.
Important: Information about products not manufactured by Apple is provided for information purposes only and does not constitute Apple's recommendation or endorsement. Please contact the vendor for additional information.