Creating a maintenance window with an extended "Active Till" fails.

Setting the year to "2037" works. "2038" gives the following error:

• Error in query [UPDATE maintenances SET name='i5 maintenance',maintenance_type=0,description='',active_since=1287767569,active_till=,maintenanceid=1 WHERE maintenanceid=1] [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'maintenanceid=1 WHERE maintenanceid=1' at line 1]
• DBEXECUTE_ERROR

"2999" is accepted, but ignored.