I just took at look at the tip board photo on Deep Disney and there are a huge number of attractions closed today (Saturday).
In addition to Pirates (closed for scheduled maintainance):
1. Big Thunder Mountain (Earthquake damage)
2. Wester River Railroad
3. Swiss Family Treehouse
4. Country Bear Theater
5. Mark Twain Riverboat
6. Peter Pan
7. Snow White
11. Roger Rabbit's Cartoon Spin
12. Gadget's Go Coaster
13. Star Tours
14. Space Mountain
That's 16 attractions! Was there another earthquake or aftershock that shut everything down?