Hi friends
My Yahoo messenger quits unexpecteley, I'm not able to work with that, please help me if anyone knows the solution

First of all what OS are you running windows mac or linux? Also have you tried using a different client software for Yahoo, like Gaim.

hi friends
my yahoo messenger quits unexpecteley, i m not able to work with that, please help me if anyone knows the solution
I would try to get the latest update of the Yahoo Messenger software. I know you can download it from the Yahoo website. That should fix any previous bugs they had, and it will reinstall any files that may have gone missing or gotten damaged, as well (like from a virus or spyware).

Possibly also run a virus or spyware scan.