I have a dsl modem made by westell, and a router made by netgear. If my pc is plugged straight to the dsl modem, I surf with no problem. When I first connect my pc to the netgear router, I also surf with no problem. After being connected to the router for a while my problem starts. My problem is that I cannot get to secondary Web pages. For example, if I go to washingtonpost.com, the initial page opens with no problem, if I try to go to a link on the site from that page I don't get to it. The status bar starts but stops halfway through, and then I am presented with a "page cannot be displayed" message. This happens to every site I go to. If I boot the router, I am okay again for a while and then the problem shows up again. As I said before, I never have this problem when plugged straight into the DSL modem.
I believe it is a PC or modem issue, as the same thing happened with a linksys router I had before the netgear. As a matter of fact, the reason I got rid of the linksys was because of this problem.