We've actually been having this discussion for quite a while.
http://www.subsim.com/radioroom/show...ght=dambusters. The decision was hardly finalized back then, so I'm not knocking this thread, just having fun with the past.
As for the choice, I'm undecided (not that our opinion matters at this point, or ever did). Platapus made an excellent point about how many other changes are likely. This probably won't be accurate in other ways, so a name change is nothing.
AVGWarhawk's link is an outstanding study of the problems involved.
I don't see a problem with the name, as it was the dog's name, but then it was just a name, and if it bothers people I don't have a problem with changing it either. I would like to say that the filmmakers' concern probably wasn't with 'The PC Crowd', as so many label them, but with overall negative reaction from the filmgoing public, who are their bread and butter. If a small group is going raise a big stink they probably don't care, but if a much larger group is going to take offense they probably just decided it was easier to change than fight.
As I said, I'm undecided.