I forgot to mention that since I installed the lastest AIS, the pc - when shutting down normally - would say: “operations are in progress”, please wait. The machine will be turned off automatically after the operations are complete". It would then take forever for the pc to shutdown. I’ve removed the “avast! gadget”, and my pc seems to shutdown normally. Now I would like to know how to remove avast!icon in Firefox. I feel that the gadget or this icon are responsible for my pc not shutting down normally (before I installed AIS, I did not have this problem).