A web-application architecture for secure cloud-computing

Currently, web-applications are the standard application model for solving business problems with technology. Cloud-computing promise to bring new levels of innovation and cost-savings - if they can be trusted to be secure. What about a web-application architecture that allows for provably secure cloud-computing? Such an architecture is possible with current technology and is defined in the paper "Regulatory Compliant Cloud Computing (RC3)" at http://www.strongauth.com/pdf/RC3-WebAppArch-1.2-2.pdf. Would be happy to present the architecture and demonstrate it with a proof-of-concept demo.