All of sudden im getting a horrible squeling sound from the belt around my alternator.

The diagnosis i got from the neighbor was that my alternator is going.

My question is, has this happened to anyone else? If so what was the problem?

I already bought a new belt and will be installing that tonight.

alternator prob just got a little loose and let out the tension in the belt and/or ur belt is old and strecht. if ur battery is still holding a charge and u havent had any problems with bat dieing or car dieing while driving they ur alternator should be good

tighten it or change it.