[UbuntuGnome] Install hangs at DKMS install completed

Trying to install Ubuntu-Gnome on a Dell Latitude D620 laptop. Booted fine in Live Mode, but during installation hangs (for over 30 minutes so far) at
ubuntu-gnome ubiquity: DNMS: install completed.

Did this twice.

Above the log window, it says "Configuring bcmwl-kernel-source.

Machine is a Pentium M from about 2006.

It's plugged into ethernet.

Any suggestions?

Thanks.