CLSS Scheme extended till 15th January, 2012 and DIN 4 till 29th February,2012.
Appended below MCA circulars in respect of the same.
https://www.mca.gov.in/Ministry/pdf/General_Circular_No_71_2011.pdf
https://www.mca.gov.in/Ministry/pdf/General_Circular_No_70_2011.pdf