NIS2012 Disappearing

 

I installed NIS 2012 from CD last Feb and no problems since; running XP Pro.  2 weeks ago LiveUpdate failed saying that I must upgrade to the new version of NIS. So I used NRT to remove NIS and did a full install from the internet.  No problems reported and everything went fine.


However, next day NIS disappeared from the system tray in the bottom right hand corner and I could not start NIS from the START menu even though it shows up. So I uninstalled using NRT and installed again from the internet.  Again no
problems.  Next day its gone again. I did this about 6 times.  Then I noticed that instead of uninstalling if I just re-started my PC NIS is fully restored.  So now, it disappears every next day and I just re-start and it comes back.


Why is this happening?   Is there a known bug in this version  of NIS 2012, V. 20.1.5 I think.