I don't know his situation, nor do I know what he is doing with that modem, but judging by the modems age, he may have a connection limit problem - older cable/dsl modems can only handle so many incoming Ip addresses at once, and then lock up after the limit is reached, requiring one to 'power cycle' the device to fix it.
If there are files offered for direct download, filesharing, or webhosting done over that modem - it is possible that Redstone is a victim of his own success.
Also, if the network is the problem, rebooting the modem won't fix it. Either the modem is too old and is starting to have thermal issues, or (as I suspect) its getting connection flooded and locking up.