Probably because EEA aplicants don't require a prior formal application for permanent residence. Both conditions for the permanent residence and naturalisation need to be checked. That is the best explanation I could come up with, I am in the

Applied on the 15th feb payment taken and letter received on the 1st of march. Still no approval though

Eligibility criteria: EEA National
Method of application: NCS
Date of application: 15/02/2013
Date of receipt by UKBA: 19/02/2013
Date of acknowledgement : 26/02/2013 recieved 01/03/2013
Date of debit of fees: 26/02/2013
Date of approval: TBC
Date of Ceremony:TBC
All sorted

Eligibility criteria: EEA National
Method of application: NCS
Date of application: 15/02/2013
Date of receipt by UKBA: 19/02/2013
Date of acknowledgement : 26/02/2013 recieved 01/03/2013
Date of debit of fees: 26/02/2013
Date of approval: TBC
Date of Ceremony:TBC