Microsoft has just released the following KB Article which includes a Hotfix:
FIX: A task sequence stops responding when multiple task sequences are started in System Center 2012 Configuration Manager
Consider the following scenario:
- You create 10 packages from an .msi file on a Microsoft System Center 2012 Configuration Manager site server.
- You create 10 task sequences that contain “Install Package” steps that reference one of the packages.
- You assign the task sequence to a collection.
- You update the policy on the client in the collection, and run all 10 task sequences at the same time through Software Center.
In this scenario, one of the task sequences may stop responding in the “Installing” state while other task sequences remain in the “Waiting to install” state. Additionally, some task sequences may remain in the “Available” state on the Available Software tab even though you had selected to install them.
Full details at: