SCCM is supported to run on Windows 2008 R2 and SQL 2008 R2 (The latest and greatest) but if you have installed SRS and enabled the ConfigMgr Reporting Services Point you will be presented with a reoccurring error in the Site System and Component Status for this role.
Message ID: 7403
Description: SMS SRS web service is not running on SRS Reporting point server "<SRSServer>".
You may have noticed that this does not impact the usage of the reporting services, and you are able to run and create reports.
The issue is SQL related and is fixed by applying Cumulative Update 4 for SQL 2008 R2
This CU can be requested from the following link http://support.microsoft.com/kb/2345451
System Center Consultant