The cumulative update “Updates for Lync Server 2010″ (KB2493736) applies to the Standard and Enterprise Editions, and addresses issues in the core components, various server roles, Unified Communications Managed API 3.0 Runtime, Lync administrative tools and services (Bandwidth Policy and Lync Mobility Service).
Check out the download for the Lync Server 2010 update today (x64 only). This cumulative update CU brings the overall version of Lync Server 2010 to 7577.197.
Make sure that a complete working and tested backup of your infrastructure is available beforehand, and only roll-out applicable hotfixes/updates to a production system after extensive tests and verification (in a pre-production or similar environment).
Keywords: patch, hotfix, update, rollup package, lync cumulative update, lync server, lync latest current version cu cu5 (Mar 2012), cu 5(.1)