We are using Edge 4.0, and are setting up a dynamic publication where we pass in an account number into a Crystal Enterprise report to filter each recipients document to their specific data.
In the Header of the document, there is a crosstab report that summarizes some data. When the publication is run, for example, for 2 accounts, the crosstab table contains the same data for both client accounts. This happens even though the detail data within the lower section of the report contains the appropriately filtered account data.
Initially I was thinking that it was picking up some cached data and using it to boost performance, but I have adjusted the locations I can find within the CMC for "Oldest On-Demand Data Given to Clients (seconds):" to 0.
See the image below for the layout in Crystal - http://screencast.com/t/eyqJ08Tu7
The account number in the header and the data in GroupHeader1 is filtered appropriately based on the dynamic recipient, but the crosstab data is pulled from another publication recipient.