M.A.S.H. didn't have a laughter track when it was shown in the U.K., but it does in the U.S and here in Australia. It's a much better watch without the laughter track.
Just saw this on Wiki 'The laugh track is also omitted from some international and syndicated airings of the show. On one occasion during an airing on BBC2 in the UK, the laugh track was accidentally left on, and viewers expressed their displeasure; an apology from the network for the "technical difficulty" was later released, for during its original run on BBC2 in the UK, it had been shown without the laugh track. UK DVD critics speak poorly of the laugh track, stating "canned laughter is intrusive at the best of times, but with a programme like M*A*S*H, it's downright unbearable."[20]