The Australian government today announced a program with 5 ISPs here to try and track down 'Zombie' computers and notify end users that their computer is being used as a bot or part of a botnet.

Zdnet article:
http://news.zdnet.co.uk/internet/sec...9235796,00.htm

Press release from the minister:
http://www.minister.dcita.gov.au/med...to_zap_zombies

Obviously 5 ISPs does not cover the entire population but they have got the two biggest.

I think this is a good start and at least they are trying to do something but will it fix the underlying problems of end users not patching and keeping virus definitions up to date:
I see 2 issues:
1) What will they do when they detect a users machine with a botnet, will they give them the tools/information they need that will stop it from happening again or will they just tell them.
2) Given they have only covered 5 ISPs, for every one they detect I am sure there will be at least 1 that they don't detect.