Lync Server 2010 Cumulative Update CU5 March 2012 Hotfix KB 2493736

a new update package has been released that include a hotfix for the mobility service

Lync Server 2010 Hotfix KB 249736

Lync 2010 Hotfix KB 2670326 (64 bit)

Lync 2010 Hotfix KB 2670326 (32 bit)