Why is Riteish Deshmukh miffed with his 'Grand Masti' co-stars?

And their behaviour has managed to miff Riteish Deshmukh, who is usually known for being the cool guy.

The trio also worked together in the 2004 release Masti and are also starring in its sequel. Says a unit hand, "Ritesh has a penchant for being on time. Not only have his co-stars kept him waiting at photo shoots but at other promotional events as well."