said by silbaco:If switching to Google DNS fixed his problem, I don't see why he will be very disappointed.
The real problem is DHCP handshakes with routers...I assume the OP uses a router to handle his security system or other device(s) and this problem causes the router to lose communication with the modem, and the only current way to restore internet access is to power-cycle the modem and router, sometimes 3 or more cycles are needed to restore the communications between modem and router and regain internet access. Some routers work better than others but all have this problem usually at least once a week.
I doubt the OP has the ability to power-cycle the modem from his remote location, that's why I said he'd probably be disappointed until WB/Exede implements software fixes to their servers and download new firmware for the modems..
If rumor hold true this problem will be fixed in less than two weeks and he can go back to using the Exede DNS servers and the benefit of their AcceleNet technology..