We have OOTB "task lists" in many sites used by the same set of users.
We have a farm with "x" site collections and "x" sites with-in them without any changes to the default content type.
We would like to roll up the pending tasks and show it in a single web part placed in default portal page.
What would be best way to do this task rollup when we have multiple site collections.
Other Details: Security is driven by AD groups placed in SP groups.