Since updating 9.04 to the latest kernel, I have not been able to connect successfully using a USB modem and wireless broadband.

There are messages in the syslogs about the USB side of things, but as I've had to resort to using XP to connect, I don't have the details.

Is there any fix for this, I'm REALLY fed up with the networking side of Ubuntu.

See http://ubuntuforums.org/showthread.php?t=1232014 for more info.

Oygle