Mt. Gox has been down for at 15-30 minutes as of 10:30 am US Central. Screenshot from a few minutes ago:
http://i.imgur.com/Y5jl57s.png
Status from Mt. Gox: https://www.facebook.com/MtGox/posts/459790297438716
Appears to be DDoS
http://i.imgur.com/Y5jl57s.png
Status from Mt. Gox: https://www.facebook.com/MtGox/posts/459790297438716
Appears to be DDoS