Shoutbox

hello all 

i have been facing a problem wth an user who tracks my conversations on yahoo chat (messenger)
he gives me the chat conversation that is running with my frend and find me that i m online even though my status is offlie and blocked him.
he says he i using some sniffer..
but i m wexed with howthis person is able to track my conversation
fo i need to change the IP o .., stop using this yahoo mesenger service . pleasesyggest .
whatever i m typing to the other person he is . tracking .
please do help me solve this povlem .
VERY URGENT sir !
i would be greatly helpful if u can do this . fo me .
only solution for me infront is stop using this ervice .please do provdie some  information how i can avoid the person tracking my conversations .
i ahve changed my password thrice . even.