How can I get rid of automated (continues)replies with some porn site links while I'm chatting

Im using Yahoo messenger, %26 my problem is while chatting with my friends all of a sudden some automatically replies keep going out to my friends without my knowledge with some porno/video sites links %26 some explicit words using my yahoo messenger ID. Others who get this links on my name, thinks its me %26 no doubt it spoils my image. Help me

As some initial solutions I tried:

1.Scanned my PC (Full) with AntiVirus (Symentec)

2.Scanned my PC (Full) with Windows defender

3.Uninstalled Yahoo Messenger %26 all other Components

4.Re-scanned the whole computer

5.Re-installed Yahoo messenger.

All the above steps couldn't helped me at all. Please Help %26 tell me how to get rid of the above problem. Hope you got what i'm saying.

Thanks in advance

Cool Gal

How can I get rid of automated (continues)replies with some porn site links while I'm chatting on yahoo?downloads

Perhaps you should try a different virus scanner or maybe your account has been hacked. Change your password if that doesn't work. Get a new yahoo id. Hope this helps.