Version 2 of rollups have become so common these days
The Exchange Team has released version 2 of the Update Rollup 5 for Exchange 2010 SP2 deployments. The version 1 was released a few weeks back, but was withdrawn due to a DAG related bug.
As usual, any interim updates from Microsoft PSS should be uninstalled and Forefront should be disabled before running the rollup setup.
The required services are automatically restarted when you run the setup.