Software Update is not showing the latest updates for my 2012 Mac mini OS X 10.8.5 other than Remote Desktop Client and iTunes. Sometimes one or the other don't show up at all. I've just learned that there is a security update, efi security update and a Mac mini efi update that's been out for the last couple months that I will manually download from Apple's download site. I tried launching Software Update from the Apple menu and from System Preferences and I still get the same results. Is there any way to reset Software Update so it shows the pending system updates?