Hello. I've been trying to solve this for about a week and got no success... I am currently using a 3.1.3 iPod Touch (NOT jailbroken) and I get the "can't verify your account" error in every twitter app I try to use... Meanwhile Facebook APP is working fine! I restored, deleted, reinstalled and I wasn't able to solve this. May someone help me out? (Already tried Twitter official APP, Twitterrific, Echofon, Echofon PRO, TwitBird PRO, HootSuite ) Thanks a lot!