This afternoon I experienced an unusual delay when shutting down my system, and also noticed something in that direction to turn. When I opened the panel of tools for performance, I found a windows alert telling me that Symantec was causing problems. This problem appears with the latest version of NIS.
Screenshot leave the windows report
Regards.
My system: Windows Vista SP2, 32bits fully updated. Intel dual core, 2Gb RAM. NIS2011 18.5.0.125 is my only security software