Why is Vidya Balan learning Telugu?

The Paa actor who is currently in Hyderabad for the shoot of The Dirty Picture, has now started learning the local language, Telugu. This should not be too difficult for her, since she is already fairly fluent in Malyalam and Tamil, apart from Bengali, Marathi and Hindi. We hear that to improve her language skill, Vidya forced people present on the sets to talk to her only in Telugu, so that she could practice. She also asked them to correct her mistakes while talking in the local lingo. Of course, we want to know, why is Vids so interested in learning something new? Is it just about acquiring a new skill, or is there a deeper implication? As Bolly-journos, we cannot help being suspicious about any new move any star makes, since that is our business. But we could not help wondering how much of what language Vidya’s ‘SRK’ speaks!