I should add that the Publisher and Distributor are running SQL 2008 SP1 on Windows Server 2008 and the subscribers Server 2003 SQL 2005 SP3. Everything is 64 bit.

Thanks Dave. Will re-visit the setup with that in mind.

The Agile approach does seem to cause some discussion and it seems very clear having tried it on a number of occasions that yes, there is a difference in approach...