One of my friend just asked me to help him out a question regarding his yahoo email account. His problem was that he was unable to access his yahoo emails although he can access the address book and other stuffs. When he try to check the mail above screen shot error occurs.
He have tried the link below error message that says to "Contact Customer Care about Error Code 2" and filled the form that pop ups but still there haven't been a solution for him for the last 3 weeks.
I Google for the specific problem and found out that it is a problem that occurs at yahoo server side and only option that we have to wait till the yahoo guys fixed the problem. Seems like it's some sort of a random problem and the yahoo support team is very slow in fixing the issues. So I must advice yahoo team that if they do not keep up there customer satisfaction up to standard they are going to loose their customers to competitive companies like gmail.