UBD

from Jargon File (4.4.4, 14 Aug 2003)
UBD
 /U.B.D/, n.

   [abbreviation for `User Brain Damage'] An abbreviation used to close
   out trouble reports obviously due to utter cluelessness on the user's
   part. Compare {pilot error}, {PEBKAC}, {ID10T}; oppose {PBD}; see also
   {brain-damaged}.
    
from The Free On-line Dictionary of Computing (8 July 2008)
User Brain Damage
UBD

   <humour> (UBD) A description (usually abbreviated) used to
   close a trouble report obviously due to utter cluelessness on
   the user's part.  Compare {pilot error}; opposite: {PBD}; see
   also {brain-damaged}, {PEBCAK}.

   (1998-08-27)
    

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