unable to log in to Yahoo! Chat

A few days ago i was chatting in the Yahoo Chat and i got a message that said that i logged out and because nothing was working i supposed i did logged out. So i logged in again, but it says my ID or password is wrong and cannot connect to Yahoo Chat. I still can check my mail... I tried uninstalling Yahoo! Messenger, but still nothing.

 

I also have a problem with Internet Explorer, but i do not know if i should post it as a new Thread... The problem is that i can only open one Iexplorer window at the time and i do not know either how i lost the bar at the bottom of each window that tells you how long is taking the window to load...
Thanks for the help

 

Nevermind that last post. I now can open more Iexplorer windows, but still dont have the bar