Before your OES11 SP1 servers are patched, ensure that you complete the following steps.
Ensure that there are no Mozilla applications running on the OES11 SP1 servers you are patching.
On any OES11 SP1 servers that have the ZENworks Agent installed for the first time, verify that the SLES 11 SP2 and OES11 SP1 installation sources are available in the Installation Source. If the sources are not listed, add them before patching the servers.