Mysterious Internet Connection Problem

[dpeterson3]

This isn't really robotics related, but I figure asking here is as good (if not better) than asking elsewhere. I can not explain why the modem at the local food pantry keeps dropping the internet connection. I can not get the thing to stay connected to the internet. It is a SpeedStream 4100 (dsl). I brought it home to test it. It is what I am using right now with no problems. As soon as I take it there, it will not connect to the internet. The cables have been replaced back to the phone and the router (a dynex) taken out, but the connection will not stay up. It finally just quit one day and I called the phone company. They said they would come. A few months later(I couldn't make it back until today), the connection is still down. The phone company never came, and several other network quru's could not solve the problem. I am at a loss. Someone installed a new DSL filter right before this. It seemed to work, but could it be the problem? If anyone else has an idea about this problem, please let me know.