I cannot sign in to my yahoo messenger though i am connected to the Internet?

[dana]

Yahoo is evidently having problems with Messenger. We are an Internet Service Provider and started receiving calls from customers yesterday asking if we made any changes preventing them from signing into Messenger. ... We have investigated the problem and found that other ISP's are having customers with the same issue.

We noted that if the user intentionally inserts the wrong password, a message appears that either the password or username is wrong. Therefore, Messenger IS making it through the intitial authentication process. It makes no difference which version of Messenger is being used. We downloaded the current version 11.5.0.228-us and are experiencing the same problem. ... Therefore, uninstalling and reinstalling Messenger is NOT going to solve the problem.

Repeated attempts at signing in sometimes works. By "repeatedly" we mean many tries. It took us over 10 attemps but were finally signed in. However, there also appears to be an address book issue as well resulting in an error code of -100.

These issues, at least for us, started sometime yesterday. It would seem that, by now, Yahoo would be aware of the problem and post something here.