Banshee, have you recently upgraded to Uverse internet? If you have, and they didn't upgrade the line from outside to your phone jack with Cat5 or better, you will get discoes. It happened to me, through 3 techs, 2 new modems and a "Your signal is fine". The 4th, a senior, knew exactly what the problem was and fixed it at no cost to me. They don't tell you that it HAS to have cat5 to work correctly.