Methods, systems and articles of manufacture for performing multiple request processing. Redundant instances of executing entities service requests in a time-delayed fashion, relative to one another. In this way, a user can be returned to an earlier state by switching to the execution flow of one of the other executing entities.

 
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< Interactive entertainment and information system using television set-top box

> Computer network and methods for granting and revoking access privileges for an information source

> Client authentication using multiple user certificates
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