Search Result for "ubd":

The Jargon File (version 4.4.7, 29 Dec 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.
The Free On-line Dictionary of Computing (18 March 2015):

User Brain Damage UBD (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)