I downloaded a anti virus setup file in my documents on Wednesday
(norton.exe). On Thursday I used system restore to Tuesday. I noticed that
norton.exe disappeared. I used system restore to come to Thursday, but
norton.exe never came back. I am using vista business. Can someone help me
solve this mystery.

Hi Harpreet,

Norton.exe is usually the Ahker worm, you wouldn't want it back. More here:
http://www.sophos.com/virusinfo/analyses/w32ahkerd.html

--
Best of Luck,

Rick Rogers, aka "Nutcase" - Microsoft MVP
http://mvp.support.microsoft.com/
Windows help - www.rickrogers.org
My thoughts http://rick-mvp.blogspot.com

"Harpreet" <Harpreet@discussions.microsoft.com> wrote in message
news:7BA241B1-6017-447F-A3BD-206EFA160CC9@microsoft.com...
>I downloaded a anti virus setup file in my documents on Wednesday
> (norton.exe). On Thursday I used system restore to Tuesday. I noticed that
> norton.exe disappeared. I used system restore to come to Thursday, but
> norton.exe never came back. I am using vista business. Can someone help me
> solve this mystery.