Sources said that Aamir and Hirani got along very well during the shooting of the film but differences cropped up due to disagreement over the promos of 3 Idiots. It was a sort of ego clash, as both of them sticked to their views and refused to compromise.
It is said that all hell broke loose while selecting one amongst the three promos prepared, which is to be incorporated with the release of London Dreams on October 30. Producer Vidhu Vinod Chopra, Hirani and Aamir reject one promo outright. However, Aamir didn't like the promo chosen by Hirani. He liked to show the film as it is while the director wants to showcase its spirit.
The duo avoided a verbal fight though. Aamir dropped the issue after failing to convince his director in spite of discussing for over half an hour. Angry over it, Aamir left the scene quietly. Now, he is unavailable to the unit of the film. It is not sure if he will take part in the promotional event on October 29 to unveil the first look of the film.
Let's hope this piece of news turns out to be just a rumour.