I've got a DSL connection, using a D-Link 300G+ modem which is connected into a Linksys BEFSR41 router. This is used to network 4 PCs. Everything worked perfectly well until about 2 weeks ago when my housemates started reporting problems. I had just uplinked a hub to the router to enable a 5th PC, and also my PS2 and X-Box consoles. At first I thought this might have been causing the problem, so I removed it - but the problems persisted. Every now and then, the internet connection on the entire network just seems to cut off completely and webpages fail to load. When trying to download files no connection can be established, or the download freezes partway through. The same goes for uploading files. We all use MSN messenger, and we can never be signed in for more than a minute without being signed out. The problems are the same for every computer in the house, and also the consoles - the connection cuts out when playing online games. The network itself (file sharing etc) works perfectly and never cuts out - its solely an internet problem. I have found one way around it - the Linksys router has a feature called DMZ (demilitarised zone) which effectively connects one computer directly to the modem by bypassing the firewall and all router settings (giving you all the advantages and risks of such exposure). If i activate the DMZ for one of the PCs, that PC has no problems, but they persist for every other user. I have read several websites about this, and many of them suggested Upnp settings - whether they are enabled or disabled on the router, the problems are the same. None of the router or individual PC settings have been changed since before christmas when everything was working. I have tried resetting the router. Any advice on this will be much appreciated.