Train Rider reports that for the second night in a row, the doors on his train at South Station were locked:

... They announced the train, still the doors were locked. There was a conductor on the track, just walking back and forth. Finally, the majority of us standing on the platform, went through the front door and then back through the cars to get to a seat. While we were walking down the aisles, one of the conductors was coming through and getting angry (p*ssed) that the conductors couldn't get up the aisle. I said, "well, this wouldn't happen if all of the doors were open." Not sure they appreciated that! ...