According to the Daily Bhaskar, it all started in the year 2008, after Saif's role was allegedly chopped in YRF's production movie Tashan. It is reported that Saif shared great rapport with Aditya Chopra, in fact, it was Adi who casted Saif in a solo role in the film Hum Tum.
After this, Saif received the opportunity to act in Tashan, and was assured that his role in the movie will be exactly be the same as it was narrated. But later, Saif found a lot of his scenes chopped. This led to a cold war between Saif and the YRF. Possibly, this is the reason why Saif Ali Khan and Kareena Kapoor chose to give a miss to the premiere party.