En estos momentos Twitter esta sufriendo un ataque de Denegacion de Servicio (DoS). Esto es lo que puede en la pagina Twitter Status:
Update (9:46a): As we recover, users will experience some longer load times and slowness. This includes timeouts to API clients. We’re working to get back to 100% as quickly as we can.
Ongoing denial-of-service attack 55 minutes ago
We are defending against a denial-of-service attack, and will update status again shortly.
Update: the site is back up, but we are continuing to defend against and recover from this attack.
Site is down 2 hours ago
We are determining the cause and will provide an update shortly.
Update: we are defending against a denial-of-service attack.