Hi gumly
The interview process was pretty straightforward. My appointment was at 9:30, reached there at about 9. Went through the security etc. Then walked to the info pass area by mistake ( the interview was on the 3rd floor). SO we went up there, deposited our interview letters and sat in the waiting room.
We were called at around 9:30 (by two different officers).
My IO was quite friendly, joked a bit about the cold. Then asked me to take an oath of telling the truth etc etc. Then he went over my application, asked me questions from the form to which I replied. The only document I had not sent with my application was my child's birth certificate. They hadnt asked for it either in the checklist nor in the yellow letter, but I had taken it along with me for the interview anwyay (along with previous years tax transcripts). SO he told me if you have it give me a copy. He didnt go through my passports (though he wanted me to place all of them on his table).
After he went through the form, he asked me to read a sentence and then write a sentence.
He then read out a set of questions for the History/Civics test from a printout. I answered 6 correctly - so he stopped there. I honestly cannot remember the questions, all I remember was that they were not the ones with dates or names of various historical/govt figures.
He then asked me to verify my information on a form ( he said that would be printed out on the naturalization certificate). He said - I am recommending you for approval. The application will go for one more once through by their office and the oath will take about 2-3 months ( could take less time or more, but that's the average)
Then he walked me out to the lobby. I was out by 9:50.
Good luck for your interview !
kharghosh