manzai which work station you use ???
Acer Extensa 5235 , I just want to add I've just installed 360 Internet Security and all is well; no problems at all.
(update) uninstalled 360 Internet Security and reinstalled 360 Total Security; everything is fine. Both the antivirus and spyware protection are now registered in the security centre. I think it was just a blip, just one of those things.