Why Yahoo Mail And Massanger Not Works ?

HI

Last one hours yahoo messenger and yahoo mail not works

i try to login in yahoo messenger but massage comes --try after some time

then i try to login in yahoo mail .. massage comes check passwords

then i try my other yahoo id ... again same check password

then again i try another yahoo id ... again same check password

In same also when put yahoo id in yahoo messenger ... massage comes

try again little bit problem in yahoo

So in my area yahoo not works but .. yahoo website open

What happen in yahoo if any one know plz tell me

why yahoo mail and messenger behave like this last 1 hour

this is a problem for yahoo not new . within every 2 months same problems comes