Had a flight out of SNA 2 weeks ago that had a problem with a thrust reverser and showed a 3.5 hour delay (officially listed). 15 minutes into the delay, as pax were lined up trying to get rebooked, they announced boarding to begin and less than half an hour after that the flight was off the ground. A short delay ensued looking for one final passenger who thought the 3.5 hour delay was still in effect.