I have had ADT for two years and thank God my contract is over with (i hope). For about the firt 6-7 months of service, we didn't have service. We had their technician come out to fix our system but he would blame our cable company (comcast) for the issues and told me that I had to contact comcast to fix the issues. So I had Comcast come out and they were unable to diagnose the problem. Turns out that a mouse or some critter had eaten through my telephone wire in my crawlspace so I spliced the wires together and tadah!!! the system... read full review »