Irritating. My DSL went down on Friday. Covad is sending out a technician on Tuesday afternoon to check out my apartment's installation. They are having problems reaching the DSLAM at the CO, but they apparently want to also check out my phone box.
Concentric (sorry XO) support suggests the problem might be a Verizon tech listening for a dial tone on my DSL line (there is none) and assuming it's free for another use. We'll see if that was really the case (or it's just finger pointing), but if it turns out to be true, I'm going to be miffed.