An hour ago I was wanting to view a .PDF file and AVAST slid a window   
   open telling me to think about what I was wanting to do.   
      
   When I hovered the mouse over the program name that caused AVAST to   
   wake up I saw a string of characters that AFAICR was nitrop~4.exe .   
      
   I searched my HDD from a CMD Prompt using DIR and all it reported were   
   files about the NITRO PDF Reader.   
   I saw the Date of one file was November 19, 2014, and two files in the   
   ALL USERS sub-directory were Dated October 14, 2014,but most of them   
   were Dated 2010 when I downloaded the Nitro PDF Reader.   
      
   Just a few minutes ago I finally saw Nitro PDF had been set to be the   
   Default PDF Reader program instead of the PDF-XChange viewer I recently   
   started to use instead of Foxit Reader, when I looked at the File Type   
   shown in Windows Explorer.   
      
   I used Open With to set PDF-XChange as the Default program I want to   
   use to read PDF Files.   
      
   I can't figure out why Nitro bumped PDF-XChange out of its place.   
      
   Maybe the XP computer is out to get me.   
      
   ... What has ears like a cat and a tail like a cat but is not a cat? A kitten.   
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