Normally: When installing an MSI, the MSI Installer service writes an eventlog message to the application log.

Problem: After installing the zenworks 10 client, this does not happen anymore!
It also doesn't write a message when repairing or uninstalling an MSI.
It affects both the MSI's installed by hand/script as well as those installed by zenworks.

Important: Our helpdesk/support personnel regularly check the eventlog to determine whether our MSI installation scripts succeded.
As we deploy everything with MSI's, it is vital that we see these messages...