> 
> You may want to do some load testing to see how your caching plan 
> affects future scalability.

Good comment. You are right on scalability. Once we have more than one web 
server it becomes more complex to manage the flushing of the caches. In 
fact it is due to this and the fact that it will be more efficient and 
manageable that I am looking at putting the cache on a ram disk, either 
through windows or possibly a separate solid state device.

Cheers
Ian