I have travelled Air Deccan 6 times this year on various routes and only one flight was rescheduled. For that too SMS was sent previous night. I had booked for my guests to fly from Bangalore to Delhi on March 14 for Rs. 999 and the flight was cancelled. Promptly they were rescheduled fir next day and the flight was okay.
Most of the reviews I have read on this site lament the facts about cancellations, no food, lower checked in luggage etc, but all these things are already mentioned clearly on the ticket.
By the way my 6 flights have cost me Rs. 222, 222, 222, 721, 721, 721 respectivelyand for these prices I am not complaining.
It is not a full service airline and comparisons with Jet and Indian are not fair.
I shall certainly fly Air Deccan anytime if I keep getting such fares. In fact I have made many people take a fligh for the first time and none of them complained. Out of ten such flights only one was delayed.