Hindi as the "National Language"?

What's your thought on the whole "national language" debate in India? Any discussion forum talking about this issue is polarized into two groups. One group says the national language is Hindi and it is said so in the Constitution. The other group says there is no national language (or 22 national languages) and that's what is mentioned in the Constitution. Irrespective of the facts, what are your thought's?

Just for the record:
According to the official version of the Constitution, there is no mention of a/22 national language(s). However, there is a directive for development of Hindi...

Note: I am copy-pasting all the comments received in the comments section. It is meant to simulate yahoo answers, where the question was originally asked.