Cant open my yahoo messenger but i can open my mailbox

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Wat's ur major problem..?
if u think ur a/c really hacked,my better advise is...backup all ur mails,drafts,sent mails to another mail id..
if u have any other mail id..try to login with that id..
i think it is msngr problem not ur id's..upgrade ur classic mail to yahoo mail+. so u can chat with ur online frnds...