Well I can tell you, you have a old firmware, and should update over night. As you see that firmware is a 2009 build, and I am pretty sure cox has a 2011/2012 firmware that should be pushed to your modem over night. I suggest doing more testing after the firmware is updated, and if it doesn't update overnight. I am sure you can PM CoxTech1
with the modem's mac address, and they will get you on the latest firmware cox is using for that modem.