Gnome-dvb-setup appears to freeze while scanning for channels

[John Robinson <jbr100uk googlemail com>]

Hi everyone.  I'm attempting to scan for channels using Gnome-dvb-setup 
with a Hauppauge USB TV stick under Ubuntu Lucid on a 64-bit system.  I 
live in the UK and the antenna nearest to me is Winter Hill.  I select 
these in Gnome-dvb-setup and click 'Forward'.  The channel scanning 
process begins, but appears to freeze when the progress bar reaches 
about 80%.  When I repeat the process but select 'Unknown' for the 
antenna, scanning takes much longer, but the process appears to freeze 
when the progress bar reaches about 21%.  Has anyone solved this problem 
and, if so, how?  I have considered creating a channels.conf file using 
w_scan, but am unsure where I need to put this file so that 
Gnome-dvb-daemon will recognise it.  If anyone can offer any advice on 
this, I'd very much appreciate it.

Many thanks,

John Robinson