In response to reports generated by the SLAC Patch and Vulnerability Group (PVG), Scientific Computing Services addressed issues related to Linux and Solaris systems.   This included research and detailed reporting on recent security scan results, determining underlying software dependencies that were averting the installation of some patches, and developing a monitoring solution on the Red Hat Network Satellite Server to detect a database problem that was preventing some systems from installing updates.   This continued effort improves the security of the systems supporting the computing infrastructure and research mission at SLAC.