This week, Microsoft has released hotfix rollup 4.1.3451.0 for FIM 2010 R2, which you can download from KB2849119.
This update fixes a few minor issues, detailed in the KB article, which I have kindly provided the summaries for below:
FIM Synchronization Service
Password management operations fail because the path for the cached version of the extension .dll file is too long. This problem also affects the WebService connector that is included in Forefront Identity Manager 2010 R2.
In certain cases in which the Synchronization Service processes ancestors, memory leaks occur.
FIM Certificate Management
This update adds the ability in the SubjectAltName policy to specify the RegisteredID alternate name in the Subject Alternate Name entry when a certificate request is issued.
If you have Microsoft System Center Service Manager 2012 Service Pack 1 (SP1) installed, and you try to run a change-mode installation for FIM Service and Portal, the installation fails.
When you install FIM Reporting on a new server that has Service Manager 2012 SP1 installed, follow these steps:
Install the FIM 2010 R2 SP1 FIMService component. To do this, clear the Reporting check box.
Upgrade the FIMService installation to build 4.1.3451.0.
Run the change-mode installation for the FIMService, and then add Reporting.