Radio contact with Chandrayaan-I (India’s Mission Moon)spacecraft was abruptly lost at 0130 Hrs (IST) on August 29, 2009. Deep Space Network at Byalalu near Bangalore received the data from Chandrayaan-I during the previous orbit up to 0025 Hrs (IST).
Its not the condition to worry, because the mission chandrayaan1 has reached 99% of its goal. It's not new in the world of astronomy, it also happened in mission Mars.
It may be recalled that Chandrayaan-I spacecraft was launched from Satish Dhawan Space Centre Sriharikota on October 22, 2008 .The Spacecraft has completed 312 days in orbit making more than 3400 orbits around the Moon and providing large volume of data from sophisticated sensors like Terrain Mapping Camera, Hyper-spectral Imager, Moon Mineralogy Mapper etc., meeting most of the scientific objectives of the mission.