Thanks for the suggestions. I have rebooted countless times, but the date remains at either 1938 or 2000.

[TiVo [p0] ~]# ntpdate -v 132.163.4.103
oztivo ntpdate $Revision: 1.21 $
Our postcode is 03000. Found matching timezone Australia/Melbourne
Offset 36000 for timezone EST, daylight saving is 0
Connecting to time server 132.163.4.103
Setting the local time to Wed Sep 12 12:49:41 2007

But again, as soon as a call is made, once "setting clock" is displayed, we're back to 1938.

Geoff