I just got a new Motorola SB1212 cable modem. I hooked it up and plugged it into my old 802.11g airport express and it worked at first. But then I started having all kinds of trouble loading web pages. I got connection interruption errors all over the place. When I plugged the modem directly into my computer it worked find. Do I need to reconfigure my AE? Or is my AE incompatible with the new modem standard? If so, what should upgrade to? Thanks.