I have an office with a cable connection from an ISP called Optimum Online, with a linksys router with 8 port switch. As you can tell they are a small office, with a an SBS 2003 Server. The internet keeps dropping, and I thought it was the ISP. They swapped out there equipment, and it was still dropping.. So we sawpped out the linksys router, and same thing. I scanned all the machines for a virus and everything is clean.. I have 5 static Ips from the ISP, and If i plug a machine directly to there router, everything works fine. Even the equipment on there network, soon so it goes back into there evnironment it goes back down. I've ran wireshark, and everything looks fine to me.. I'm not sure what to really do, everything looks fine..