PatchLink Update 6, a new version computer network security patch and vulnerability management software, is now available from PatchLink Corp.. The update, targeted to IT security professionals, enhances the software’s architecture for broad-based international support. Pricing begins at U$1,498.80 for the PatchLink Server (Plus) software, plus $18 per node per year for Windows agents; $75 per node per year for non-Windows agents (i.e., Mac OS X, Linux, UNIX, NetWare, etc.).