I have the exact same problem, I posted a thread in download problems, about only getting one connection up, whereas I used to get 8 connections up. If I find a solution I will be more than glad to share with the collective here. If anyone else finds a solution first let me know!!! my e-mail is internet_ronin@mac.com
Thanks guys, I owe you one

iBook 500mhz (combo drive) running OS X, with Cable modem

~ tha Ronin