Are you overclocking your computer, or vid card mark bonamer? If your crew came back after a re-boot, maybe they got the back-pay owed them and decided to spend it fast? Are you missing any rum rations - how 'bout torp juice?? Maybe they were all top-side in the dinghies imbibing? Some data bits in your computer seem to be getting out of order somehow... Maybe it's a date thing with the game, in the crew or berthing positions, such as February 29th, April 31st, June 31st, or some such? You close to the end of a Month with 30 days in it?...