A bad experience

[Fred]

It tasted much like dirty vinegar - not the slightest hint of fruit, an acid bath for the taste buds

I should also mention that under the foil seal there was a greenish film over the surface of the cork, although the unexposed part of it seemed moist and intact. (I don't know the significance of this observation)

I guess my question (which seems to be answered by foodie) had been whether I simply purchased a bad bottle of a quality wine or made an error in choosing a wine past its drinkable age. I do believe that there was something not right with my particular bottle, since it was so vastly different from similar wines I have tasted in the past.