Sorry that I'm writing in English. I can't use Korean here. What does "s/key required" message when I try to login to my unix account? And what do I need to do to login? I'm visiting another school and tried to login to my account in my school. But when I typed in my ID, it said "s/key required", and I typed in my password but it wouldn't let me in. I can't read Korean, either, so plz answer in English. Thanks. 滄浪之水淸兮, 可以濯吾纓; 滄浪之水濁兮, 可以濯吾足.