So, I patched our 2 Primary servers and one Satellite to 10.1.3. Verified that all appeared well, our high CPU utilization issue on one of the servers went away. After monitoring for a while, I deployed the patch to the rest of our machines.

Soon afterwards I started getting reports of the Users getting the Zenworks login pop-up box. I forced my machine to update, sure enough mine did also. I immediately aborted further updates of the client machines and started investigation.

An unknown but no insignificant portion of our newly-patched 10.1.3 clients have user authentication problems, at this time I have physically verified 12 of the approximately 70 that patched while only identifying one that is working correctly. The precise error is:

"Unable to log into the network because the login credentials or the server certificate is incorrect".

These machines worked correctly under 10.1.2. Machines that have not patched remain functional without errors. The client Debug log from my machine is below.
[DEBUG] [02/19/2009 11:47:57.192] [1484] [ZenworksWindowsService] [8] [] [ConnectMan] [] [ResetConnections()] [] []
[DEBUG] [02/19/2009 11:47:57.192] [1484] [ZenworksWindowsService] [8] [] [ConnectMan] [] [ clearing host table] [] []
[DEBUG] [02/19/2009 11:47:57.192] [1484] [ZenworksWindowsService] [8] [] [ConnectMan] [] [ clearing IP address table] [] []
[DEBUG] [02/19/2009 11:47:57.192] [1484] [ZenworksWindowsService] [8] [] [ConnectMan] [] [ clearing IP URI table] [] []
[DEBUG] [02/19/2009 11:47:57.282] [1484] [ZenworksWindowsService] [8] [] [RemotingService] [] [ZENIsServerAvailable entered] [] []
[DEBUG] [02/19/2009 11:47:57.282] [1484] [ZenworksWindowsService] [8] [] [RemotingService] [] [Unfiltered zone config list is:] [] []
[DEBUG] [02/19/2009 11:47:57.282] [1484] [ZenworksWindowsService] [8] [] [RemotingService] [] [ https://ZenworksPHS.pasco:443/] [] []
[DEBUG] [02/19/2009 11:47:57.282] [1484] [ZenworksWindowsService] [8] [] [RemotingService] [] [ https://10.20.0.8:443/] [] []
[DEBUG] [02/19/2009 11:47:57.282] [1484] [ZenworksWindowsService] [8] [] [RemotingService] [] [ https://zenworks.pasco:443/] [] []
[DEBUG] [02/19/2009 11:47:57.282] [1484] [ZenworksWindowsService] [8] [] [RemotingService] [] [ https://10.0.0.19:443/] [] []
[DEBUG] [02/19/2009 11:47:57.282] [1484] [ZenworksWindowsService] [8] [] [RemotingService] [] [Filtered zone config list is:] [] []
[DEBUG] [02/19/2009 11:47:57.282] [1484] [ZenworksWindowsService] [8] [] [CertManager.SubjectIsHost] [] [No certificate found for host: zenworksphs.pasco] [] []
[DEBUG] [02/19/2009 11:47:57.282] [1484] [ZenworksWindowsService] [8] [] [CertManager.SubjectIsHost] [] [Found certs for host 10.20.0.8] [] []
[DEBUG] [02/19/2009 11:47:57.282] [1484] [ZenworksWindowsService] [8] [] [CertManager.SubjectIsHost] [] [Subject in certificate is : CN=ZenworksPHS.pasco, OU=ZENworks] [] []
[DEBUG] [02/19/2009 11:47:57.292] [1484] [ZenworksWindowsService] [8] [] [CertManager.SubjectIsHost] [] [Found certs for host zenworks.pasco] [] []
[DEBUG] [02/19/2009 11:47:57.292] [1484] [ZenworksWindowsService] [8] [] [CertManager.SubjectIsHost] [] [Subject in certificate is : CN=zenworks.pasco, OU=ZENworks] [] []
[DEBUG] [02/19/2009 11:47:57.292] [1484] [ZenworksWindowsService] [8] [] [CertManager.SubjectIsHost] [] [Found certs for host 10.0.0.19] [] []
[DEBUG] [02/19/2009 11:47:57.292] [1484] [ZenworksWindowsService] [8] [] [CertManager.SubjectIsHost] [] [Subject in certificate is : CN=zenworks.pasco, OU=ZENworks] [] []
[DEBUG] [02/19/2009 11:47:57.292] [1484] [ZenworksWindowsService] [8] [] [RemotingService] [] [ https://zenworks.pasco:443/] [] []
[DEBUG] [02/19/2009 11:47:57.292] [1484] [ZenworksWindowsService] [8] [] [ConnectMan] [] [FindFirstContent()] [] []
[DEBUG] [02/19/2009 11:47:57.292] [1484] [ZenworksWindowsService] [8] [] [ConnectMan] [] [ ] [] []
[DEBUG] [02/19/2009 11:47:57.292] [1484] [ZenworksWindowsService] [8] [] [ConnectMan] [] [https://zenworks.pasco:443/ ] [] []
[DEBUG] [02/19/2009 11:47:57.292] [1484] [ZenworksWindowsService] [8] [] [ConnectMan] [] [ ] [] []