Hi Paul, It's PEAKABOOS little brother. PEBKAC: /peb´kak/ [Abbrev., "Problem Exists Between Keyboard And Chair"] Used by support people, particularly at call centers and help desks. Not used with the public. Denotes pilot error as the cause of the crash, especially stupid errors that even a luser <http://www.catb.org/~esr/jargon/html/L/luser.html> could figure out. Very derogatory. Usage: "Did you ever figure out why that guy couldn't print?" "Yeah, he kept cancelling the operation before it could finish. PEBKAC". See also ID10T <http://www.catb.org/~esr/jargon/html/I/idiot.html> . Compare pilot error <http://www.catb.org/~esr/jargon/html/P/pilot-error.html> , UBD <http://www.catb.org/~esr/jargon/html/U/UBD.html> .