Welcome to Answerpool "singlemomsrock"
I suspect what's happening is the cookies for Yahoo Messenger have glitched and the Yahoo Server sees them and says "you are online"

To verify this go to the Yahoo members directory
http://members.yahoo.com/interests? (grey box top of page) And Messenger switched off (exited)and look for your screenname has a grey "sad face" (under your yahoo avatar)
This means that you are not "on air" Ok?
Solution? Not worth putting an "away message" up. People still pester you

(Learnt that from ICQ)
Your best hope is to do a cookie clearance in Internet Explorer offline(with Yahoo exited) Post again if you are not sure how to do this
Next, log on again (all saved logons will have to be remade manually ) But this method is only used once in a blue moon.
And you should get your peace back?
