When Baltar was talking to Six about all of the samples he had to test with the Cylon detector, he says "...47,905 blood samples. Eleven hours to test each one for Cylon indicators. 21,956 days." Yet in the previous episode Baltar puts the slide containing Boomer's blood sample into the Cylon detector and he receives results within a few minutes.
Ellen states she was at the airport on Picon buying a ticket to go home when the attack came, yet in "The Plan," we see her in a bar in a city on Picon, not at the airport.