Update Rollup 3 can be downloaded HERE. This will bring your Exchange version to 14.1.289.007.
For a description of the update and all of the included fixes, see KB 2529939
For those of you running DAGs, please see the following article: Applying Updates to Exchange 2010 SP1
If you are running Forefront, it is important to disable Forefront protection during the update:
- Before running patch: fscutility /disable
- After running patch: fscutility /enable