Update Rollup 18 for Microsoft Dynamics CRM 2011 is available, the KB article related to this release:

http://support.microsoft.com/kb/2958724

Download Link:

http://www.microsoft.com/en-us/download/details.aspx?id=44265

Some  important issues that this UR fixed:

• If a user’s logon domain is different from the Fully Qualified Domain Name, Deployment Manager crashes while opening.
• When a Managed Solution is imported that updates an existing solution that contains customizations from another Managed Solution, not all labels included in the update are applied to the system.