Due date extended - interest u/s. 234a ?

Hello everyone,

in income tax form when i enter the date as 01/08/2012 as date of filing then although it is within the due date(due date 31/08/2012) still interest under section 234A is calculated and it is showing as tax payable.

My ? : should we pay the interest u/s. 234A or Not  for return filed between 01/08/2012 to 31/08/2012 ?