i was at bcn when it happened...total chaos in the terminal,with (inexplicably) gates being shuffled around without telling anyone,no airline representatives around or anything,and delays of around 3 hrs.Announcements only stated that there was a delay due to "airport technical problems",which could have meant computer systems,electricity or even a strike for all the pax knew...no info at all was given.I think,being a pilot,i was the only one in the terminal who knew that there was a situation by looking at the huge number of lights surrounding the acft which seemed to be 'parked' in a very odd spot (initially i guessed it may be a bomb scare/hijacking as it was isolated & there was so little info),although it only became clear what it was as we taxied out past the KLM.
interested to see what the investigation reveals...