uninstalling SSRS and SSIS from clustered SQL Server 2008 R2 SP1 Due to the security recommendation, i will need to uninstall the unused SSRS and SSIS component from a production cluster SQL Server 2008 R2 SP1, so what is the caveats and what do I require to do to ensure the Database engine still up and running ?

Thanks,
Al
Neither of these components are cluster aware and they will be separate from the database install, so you would just run the SQL 2008 R2 Add/Remove programs from the control panel of each cluster node and select uninstall for both of these components.  A reboot may be required to take effect.