Hi there yahoo messenger users, if you encounter this problem and haven't solved it yet, and gone trough many solutions but none of them seem to work, and ended thinking up to reformat your OS? :D I think I have a solution here,
1. Uninstall Yahoo Messenger,..
2.Create another user account, and install yahoo messenger in that account.
That solves my problem, if thats doesn't work to you and found a solution you can post it in here so others may have help to run. :D