UK Permanent Residence based on 5 years Non EU Family permit

[yurkin]

Hi,
This topic has been discused before,but my search didn't return anything.
Could someone please clarify on when to apply for Permanent Residence and Naturalisation?
Here is my timeline
I am Non EU citizen.
10/2003 Entered UK on student visa
01/12/2004 Married Spanish national in London on student visa.
20/04/2005 Aquired 5 years EU Family Resident Permit.
02/2007 My spouse was granted British Citisenship and holds 2 citizenships now.
I didn't switch to UK Family Route then and stayed on the EU route.
Now, 5 years since my wedding are running out on 01/12/2009, I guess I can apply for Permanent Residence.
I read on this forum that the Family Permit date in my passport is just a formalisation and 5 years count down from the date on Marriage Certificate.It's according EU directive.
Is that correct?
Given thiat Permanent Residence is automatic and I dont have to apply for it (according to Home Office website) and that my spouse is now british I wonder if I will meet the requirements to apply for Citizenship after my 5 years that is on 01/12/2009?
I am sorry if my story is messy.
Any help to clear my doubts is much appreciated.

Thank you

[Ben]

You will acquire PR on 01/12/2009. You can apply for a Permanent Residence Card on form EEA4 if you wish.

My understanding is that you will be eligible to apply for naturalisation as the spouse of a British Citizen immediately after 01/12/2009.

[yurkin]

benifa thank you very much for quick reply.

I just wonder if I applied on 02/12/2009 for naturalisation how could I prove to Home Office that I am eligibible to apply for Citizenship as I have neither Permanent Resident Card in hands nor Permanent Residence sticker in my passport?
All my documents are in order,but will it be enough to convince HO in my eligibility?

[86ti]

The sticker is just a confirmation. You will have to proof your status anyway with your documents and the proof of your spouse's citizenship.