My ISP is switching from Adelphia to Time Warner . . . anyhow I have noticed that my cable modem is taking longer to re-train the connection when I periodically power down the unit. Just got off the phone with tech support and he claimed my modem my be going bad. Apparently I was showing some data lose but the connections was good. Do these units just go bad gradually or do they just quit. I have a Toshiba PCX 2200 I have had this modem since at least 2003 or 2004. Any thoughts?