how much yogurt is too much?

I love yogurt ... and I'm currently living in Spain where healthy snack food is hard to come by.

Lately, I'll eat greek yogurt for breakfast, have some yogurt with granola for a snack and enjoy low-fat/non-fat froyo with friends.

It's been so hot here, that I'm really liking the refreshing taste of cold yogurt and with all of the exercise I do, I appreciate its protein content.

There's no downside to eating this much yogurt, is there? I would hate to think that I was overdoing it on such a tasty food.