Microsoft has released Update Rollup 2 for System Center 2012 SP1 Service Manager

This update contains a set of bug fixes to the System Center 2012 Service Manager SP1 release. It should be applied to all Service Manager 2012 SP1 server installation. There are two executable files available:

These executable contain the cumulative update package and be applied to all Service Manager 2012 SP1 server installation.

SCSM2012_CU_KB2802159_AMD64_7.5.2905.125.exe
SCSM2012_CU_KB2802159_i386_7.5.2905.125.exe


Bug fixes included in this update:

If the amount of “Manual Activities” displayed in Service Manager Portal exceeds a certain limit, page load times out and does not render properly resulting in a blank page
Improper cleanup of custom related type causes grooming on the EntityChangeLog table to stall causing the table to grow substantially
Service Requests complete unexpectedly due to race condition between workflows
Console crashes when double clicking parent incident link on an extended incident class
PowerShell tasks created via the authoring tool don't run due to incorrect reference to certain assemblies.
Exchange MP gets stuck in pending association post MP Sync Job

Please see KB2828618 for additional data and installation instruction.

  Update Rollup 2 for System Center 2012 SP1 Service Manager (KB2802159)