I get a download speed of about 30 kbps using the Conexant-based ADSL modem in Linux. I used to get 55-60 kbps earlier, but that's another story.
The funny thing is, when I connect to the internet from Windows -- installed as a guest OS using VMWare -- using the VMWare virtual network interface, and the same freaking connection that runs from Linux, I get 65-70 kbps. What am I missing?