'Corked' or Mis-corked?

[pgup]

I received a completely sealed French, 1998 Bordeaux - Chateau Saint-Sulpice as a gift. When I uncorked it, noticed the cork was from 1999. Have you ever heard the next year's cork being used from this winery? Also, the cork had a vinegary smell (not corked) and quite possibly not maintained in contact with the wine. Should I be concerned with the wine distributors storage methods?