Pretty old news, but I only just noticed:

26 October, 2006
We are now approaching the end of this project, and this means we unfortunately no longer have any more model simulations available for download. Currently downloaded and running simulations will still be accepted. Please see the link in our previous news item for further details.
If you want to keep contributing your computing time to climate modelling projects, then we encourage you to join the main experiment.
So keep crunching if you have work units, but you won't be able to download new ones.