I am sorry. I don't know why...but it doesn't 
sometime. Especially, during 11:00PM to 1:00 AM 
Japan Time. It's a prime time for Internet in 
Japan. Yahoo server often becomes slow...I had a 
trouble because of this just before. It turned 
out Okay tho. Japanese AT&T allows Japanese 
people to use a fix rate phoneline after 11:00 
PM. So, heavy traffic during midnight causes some 
problems. Please try it again later on. If it 
doesn't work, I have to get it fixed somehow. 
What do you think it doesn't work for some 
users??Hmmmm...

Thanks,
Keigo