I work from home and it has been working just fine until last week. Wireless router, Linksys and a modem. I just thought I must have done something for it to stop working all of sudden, got a new ethernet cord yesterday still not working.
So you have a cable or dsl modem that is then attached to a Linksys wireless router and your computer connects by wireless? Do you have any other wired or wireless devices on your network?