2005-10-01 : Tapping an Aura or Equipment doesn’t tap the creature it’s attached to and vice versa. Tapped enchantments work normally. Tapped artifacts work normally unless they say otherwise.

2005-10-01 : “Summoning sickness” applies only to creatures, not to other permanents. You may tap a noncreature permanent to pay for an ability with {T} in its cost even if the permanent entered the battlefield that turn.