I have this problem since Windows 7 Enterprise came out back in August. I am loosing connection. Odd ting about it is it's random. Sometimes nothing for 2 weeks. Most of the time the problem is Your DSL line is not synchronized. Shows either DSL Line not Synchronized (most of the time), or DSL Line is down or PPP down or Connectivity to Gateway down. I turn off modem, turn of connection, nothing helps. Still not synchronized. But here is the mystery - when I turn off Eset Firewall, then the problem is gone. Line is back in sync and network works. I can turn Eset back on after that. I could remove the firewall to see what happens. But it's so random I would end up probably installing another firewall altogether. Not sure why Eset is blocking this synchronizing of DSL line. What kind of protocol is it.