On Sunday 16 September 2012 22:51:02 Baron wrote:
> Mmm.  Two things spring to mind.  Download corruption because of a bad
> network card or poor cable connections on the Ethernet connectors.  Try
> replacing the cable.

Thanks, Baron.  Yes, I thought of the cable.  

After reading your suggestion, I have ordered a new network card because the 
network card is indeed an old one.  I couldn't install with the on-board one 
because the driver is not in the Squeeze install.  I was concentrating on the 
basic problem, and installed an old network card so that the driver would 
indeed be supplied by the installer.

I am beginning to wonder whether I damaged the motherboard when I was 
installing it. :-(

Thanks for your help,
Lisi