For the past ytwo years I would be able to dnwnload at 400kK/sec and upload around 60kB/sec. For the past few weeks I would just get a fractionof that and sometimes it would just not load a page. I would get a 404 - it was that slow. I talked to my ISP, of course they don't support routers because they are assholes as usual. I tried shutting down the WIndows machine, and it did the same thing on my Mandriva Linux machine - horrible transfer machines. I also troed unplugging the Windows maching - no change. I shut down and unplugged the Linux machine - horrible transfer speeds on the WIndowsm machine. I wouldn't see any activity lights on either of the ports either. I gtried a different router - I bought my parents anew one and I haven't had a chance to install it - A Linksys WRT540GS. No change in operation. The only thing I didn't repalce is the cable modem itself a BEFCMU10. The activity light on the cable modem blinks constantly too. When I switched routers I got a new IP address - so I don't think it is a DOS attack. With both machines off and unplugged - the activity light is still going bonkers.
Here is a video of what it does...