You have been disconnected from chat because you have signed into Yahoo! Messenger from another computer...?

You have another Yahoo program open or you're signed in from your mobile phone for example

Since Messenger Version 9 was introduced, Yahoo has prevented us from having 2 Instant Messaging capable programs open and active at the same time.

For example, Yahoo Messenger with Yahoo Mail or Yahoo Webmessenger, your mobile phone, Ipod, or other computers etc. etc.

Yahoo classifies all these programs as "Different devices or locations". Navigating from one to the other will close one program and you may get a notification message, telling you that "You have been signed out of chat".

Note. Hitting the X on the Contacts page in Yahoo Messenger does not sign you out of Yahoo Messenger (unless you made that setting in 'General'. it only closes the contacts page. Like WLM you have to close the program by right-clicking the icon in the system tray and selecting 'Exit'

You can have Yahoo Mail and Messenger ( or any other program ) open at the same time as long as your status is "Offline" in Yahoo Mail. Use the drop-box next to your name and "Sign out of chat"

Your online contacts will vacate the inbox until you make yourself "Available" again

If you suspect your account is being hacked :-

Close down all Yahoo programs and enter your user name in this software and hit 'GO'

http://detectinvisible.com/

This is an old question.

Yahoo has put a new feature in your inbox. To the far left you will notice "chat and mobile texting" loading, when you sign in to your inbox. Click on the drop down arrow and click on "offline". You shouldn't have any more problems being disconnected from YMessenger when you sign in to your inbox.