mdk 9.1 internet problems
i tried mdk 9.1 , had the same problems. in the control center make sure that your modem is detected in the hardware section, and then try to set up your connection and connect. that's the reason i got away from mdk even after you setup it seems you have to connect from the control center, too cumbersome.
under redhat and other american distros its not a problem, but these european distros are different, seems that the internet is something that they guard zealously. perhaps their setup as far as cost, etc. is different from the us.
i finally set it up but thought connecting was too much of a pain. shame its a nice distro other than that.