Apparently Angelina Jolie and Brad Pitt have been arguing lately. Jolie is spending 15-hour days working on demanding action flick Salt. For the role, she has lost weight and done intensive physical training.

Reports in The Daily Mail say an exhausted Jolie recently arrived home from a long day at work on the  movie to find Pitt watching DVDs and drinking beer in their bedroom while the pair’s six children were wreaking havoc downstairs. This is said to be the second big argument between Jolie and Pitt during the last few weeks.

There are also reports that the two are sleeping apart during Jolie’s grueling filming schedule, and that Jolie is spending much less time with Pitt and the children than before, which is only logical since she is working such long hours.

Meanwhile, Pitt may soon be starring with Natalie Portman in a romantic comedy with the exhausting title Important Artifacts and Personal Property From the Collection of Lenore Doolan and Harold Morris, Including Books, Street Fashion, and Jewelry, by New York Times Op-Ed editor Leanne Shapton.

The book, optioned recently by Paramount, is in the form of an estate auction catalog with entries that tell the story of the failed relationship between a photographer in his 40s and a food columnist in her 20s.