"I love VMs. I do everything with them. I keep a clean Linux (CentOS 5) install as a host OS and do everything on VMs. As you mentioned, if anything goes wrong you just fire up a clone. It's also cool when you need to transfers stuff between physical machines. Just move the images. No reinstalls. :) The cloud stuff sounds cool, but I wouldn't trust it for a demo. :) Cheers Tim..." - oraclebase