[Claud]

The problem for me, and a whole lot of other Orthodox Christians, with the papal pronouncement of 1854 is that it looks to be rooted in the "original sin" idea, i.e. in Augustinianism. As you probably know, Augustinian ideas just don't fly too well with Orthodox Christians. We look at the doctrine of Immaculate Conception and we see a poor solution to a problem that never existed in the first place

Understood. "Looks to be" was very judicious of you, and well appreciated. If you can just leave a little room in your mind for the possibility--however remote--that our ideas of original sin *may not be incompatible* with the Holy Orthodox faith of the Greek Fathers, though they are couched in a language you don't use and may not even particularly like, I can leave this thread a happy man.

[Graves]

They certainly are not compatible. Where I come from (see the "Commonitory" - in Latin if you like, of the Western father St. Vincent of Lerins), we call that incompatibility heresy on the part of the Pope of Rome in 1854.