Bubbly taste...what was it?

[Thomas]

There should be no bubbles in Chianti. Sometimes, however, Chianti, and wines like it that are high in acid, seem bubbly on the palate--that's the acid at work.

Your description sounds like there were a lot of bubbles and if it wasn't the acidity then it had to have been a wine gone wrong--re-fermentation in the bottle will produce carbon-dioxide bubbles. Secondary fermentation, which is not the same as re-fermentation will also produce bubbles, but they will be less forceful and quite tiny.