Interesting problem but crxforum seems to have left the building. Hellooooo!
Any error messages on PC or Mac? (besides the usual timeouts)
I'd like to know how you're testing connectivity. Test from cmd.com. Ping, nslookup. Can you at least ping the router? Does anything work when browsing is down?
Does the problem still occur after the delay if you boot the PC in "safe mode with networking"? (Boot safe mode w/net, reset router, wait.)
How are other systems connected to the router? Any wireless?
Have you tried another router? Even of the same model?
Intermittent problems make me howl at the moon and think about things like power draw of a 3rd link or a ground loop from that cat 5 connection. Try wireless on your system, at least temporarily.
I'd rate TCP/IP specs as less of a guarantee than community harshness when someone doesn't stick to them for an implementation. The way router code is shared among vendors, or even shared hardware with different boxes and labels, if there's a problem it's probably well known or it's been fixed. Anyway, we'd have heard of this if it were a Linksys thing, unless maybe he's using an alternate firmware? (openwpa mod, etc)
crxforum, are you still here?
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There are a vast number of people who are uninformed and heavily propagandized, but fundamentally decent. The propaganda that inundates them is effective when unchallenged, but much of it goes only skin deep. If they can be brought to raise questions and apply their decent instincts and basic intelligence, many people quickly escape the confines of the doctrinal system and are willing to do something to help others who are really suffering and oppressed." -Manufacturing Consent: Noam Chomsky and the Media, p. 195
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