tarchon said:Yeah, I read it. It says "effect" not "spell". A successful disp magic by default ends any spell currently running, unless the spell desc. says otherwise - the reason why it can't undo effects of instantaneous spells (F to S, Fireball, etc.) is that the spell isn't ongoing. The counterspelling section is pretty clear that DM can dispel instantaneous spells when it's cast simultaneously (unless it's noted to be non dispellable like Geas), the one time when the target spell is actually running. Break Enchantment is more of an effect-undoing spell whereas Dispel Magic just turns spells off.
ah...by "countering" you mean counterspelling. My bad...

Still, counterspelling seems a little misplaced since our discussion (so I thought) was about reversing, thus effectively countering, instantaneous effects such as petrification.