My phone suddenly started freezing up and being unresponsive. After a battery pull followed by restart, a strange message appears.. I've attached a screenshot to show exactly what displays.

After I press OK my phone continues to act normally up until it randomly freezes again.. Any ideas why this is happening and how I can make it stop? This is quite frustrating and I would love to get my phone back in normal working order without having to make a trip to the verizon store.