Hi Jared,
I have upgraded today from the community script installed 4.2.3 to 4.2.4. I tested a maintenance window before and after upgrade and the Production State DOES change as expected. Zenactiond.log shows typical messages like the following (and no error messages).
2013-08-07 16:53:17,577 INFO zen.maintenance: Performing periodic maintenance
2013-08-07 16:54:17,580 INFO zen.maintenance: Performing periodic maintenance
2013-08-07 16:55:00,019 INFO zen.MaintenanceWindows: Mainenance window 1655_to_1705 starting
2013-08-07 16:55:00,046 INFO zen.MaintenanceWindows: MW 1655_to_1705 changes i-2547e769's production state from Production to Maintenance
2013-08-07 16:55:00,083 INFO zen.MaintenanceWindows: MW 1655_to_1705 changes zen42.class.example.org's production state from Production to Maintenance
2013-08-07 16:55:17,584 INFO zen.maintenance: Performing periodic maintenance
2013-08-07 16:56:17,588 INFO zen.maintenance: Performing periodic maintenance
2013-08-07 16:57:17,592 INFO zen.maintenance: Performing periodic maintenance
2013-08-07 16:58:17,597 INFO zen.maintenance: Performing periodic maintenance
2013-08-07 16:59:17,600 INFO zen.maintenance: Performing periodic maintenance
2013-08-07 17:00:17,603 INFO zen.maintenance: Performing periodic maintenance
2013-08-07 17:01:17,607 INFO zen.maintenance: Performing periodic maintenance
2013-08-07 17:02:17,610 INFO zen.maintenance: Performing periodic maintenance
2013-08-07 17:03:17,614 INFO zen.maintenance: Performing periodic maintenance
2013-08-07 17:04:17,618 INFO zen.maintenance: Performing periodic maintenance
2013-08-07 17:04:59,015 INFO zen.MaintenanceWindows: Mainenance window 1655_to_1705 ending
2013-08-07 17:04:59,022 INFO zen.MaintenanceWindows: MW 1655_to_1705 changes i-2547e769's production state from Maintenance to Production
2013-08-07 17:04:59,035 INFO zen.MaintenanceWindows: MW 1655_to_1705 changes zen42.class.example.org's production state from Maintenance to Production
2013-08-07 17:05:17,621 INFO zen.maintenance: Performing periodic maintenance
2013-08-07 17:06:17,624 INFO zen.maintenance: Performing periodic maintenance
'Fraid your issue may be specific yo your installation.
Cheers,
Jane