Ubuntu in Thinkpad A21m

[dinux]

Hello..

I install ubuntu breezy in thinkpad A21m (2628) then upgrade to 
dapper.

Before, I did not touch my internal modem inside A21m because I am using
cable modem connection to connect to internet.
Now, I try to detect the modem but I got several message from dmesg that
mean it already include in my existing kernel (sudo modprobe ltmodem)

[4295412.125000] ltmodem: module license 'Proprietary' taints kernel.
[4295412.166000] Loading Lucent Modem Controller driver version
8.26-alk-8

then I run wvdial to detect w/c port that use by modem, but I got error
from dmesg.

[4295412.125000] ltmodem: module license 'Proprietary' taints kernel.
[4295412.166000] Loading Lucent Modem Controller driver version
8.26-alk-8
[4295545.405000] serial8250: too much work for irq3
[4295545.419000] serial8250: too much work for irq3
[4295545.440000] serial8250: too much work for irq3
[4295545.453000] serial8250: too much work for irq3
[4295545.466000] serial8250: too much work for irq3
[4295545.545000] serial8250: too much work for irq3
[4295546.100000] serial8250: too much work for irq3
[4295546.655000] serial8250: too much work for irq3

Can some body help me to figure out ? :)
many thanks
 
rgds,