Mmmm. I should have been a little more helpful re: my setup.

* My temperature stays around 34 to 35 deg C.
* I'm running R1.5 (2005/11/28) of the OzTivo image and have only ever run that version.
* I have a 60GB Seagate Barracuda (pre Fluid Bearing generation) although I'm planning on buying a 250GB 7200.8 series drive. Default 127MB swap.

My router is a Cisco and I've just checked the syslogs (on the router) from the last week or so. It's stable as. I've configured it to assign a static DHCP (ie. always leases the same IP address matched up to the TurboNet MAC address) which has a loooong lease. The router definately is stable (I've worked on (admittedly bigger) Cisco's with uptimes of 5 years).

I do have external web access enabled through the Cisco from the outside world. Although, I have mapped an unpopular port number on the outside to the Tivoweb server on the inside of the Cisco. My DSL external IP address is dynamic (due most NZ ISPs!!) so I'm a roaming target any time I wish to reset the DSL session - so I figure it's safe enough. The router logs report that it is only me from my workplace and my Blackberry's web client that has even attempted access from the outside world - so I can rule out an external denial of service attack. ....I'll firm this up at a later date by setting up a SSL VPN and tunnelling the TiVoWeb application through that to secure browser sessions terminated on the Cisco.

Also, my load average never drops below 1.0 and frequently sits up near 2.0. Is this normal quiescent CPU activity?

I have now set my TurboNet timing from 'optimal' to 'failsafe' and rebooted. I'll report back if I still have grief. I have yet to FTP off the TiVo logs and trawl them.

Many thanks for your suggestions!