yahoo.co.in mail account not working...pls help

I am not able to check mails with yahoo.co.in account.

The problem is peculiar because i am able to log onto Yahoo messenger,yahoo photos and MYYahoo with the same user id and password. But cannot log onto the mail box.

Whenever i try to login, i get either time out or page cannot be found. (reason displayed: either server is down or your browser settings is not correct)

I mailed to yahoo help and they reply saying : cookies problem.change your browser settings.

I did clear the cache, chage the privacy settings to medium-low.
But still i am not able to log onto the account.

Can anyone help me with this? Thanks.