I haven't read your post on your website yet (I am very busy at the moment but will read it after your respond) but isn't your CISCO ubr924 DOCIS 1.0 only?!??!
I beleive Bresnan Communications runs only DOCIS 2.0 now, I may be wrong (but usually am not

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What I would do is just get another modem, and what I reccomend is a Linksys BEFCMU10 or BEFCMU10v2 or BEFCMU10v3 ~~ just a personal favorite. I have never had a problem with mine and always get great connectivity out of it. I would also trust Motorola and Terayon (kinda) ---- Just do me a favor and stay away from DLINK, the price may make you think about it but I personally don't trust them ever since a 33.6 modem I had of theirs (of course YEARS and YEARS ago) caught on fire.
CISCO is bad ass, look here
http://www.testmy.net/faq.html#Net 
----- but I personally wouldn't spend CISCO kinda money on a cable modem

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