The friendship between Dia Mirza and her filmmaker friend Sanjay Gupta is going through testing times. The reason being, the delay caused to her film Acid Factory which is being produced under Gupta's production banner White Feather Films.

According to our source, "Acid Factory has Dia Mirza as the solo female lead amongst five to six male leads and it is one of her most challenging roles. Her character in the film is said to have grey shades.

She is confident that this film will bring her back in the reckoning after a long on going lull in her career.

But much to her disappointment the film is taking quiet long in the making and already has couple of its schedules disrupted and the economic slowdown have only made matters worse for the production house."

"Dia is getting restless waiting endlessly for the film to finally get ready and hit the silver screen. She is understandably miffed for her dates being wasted as the film's schedules have kept getting postponed." adds the source.