help

[Anna Wei]

Hi,
I try to use su switch to another user .
if always say    ' su: incorrect password'.
I am quite sure I have entered the correct password.
It used to work properly on my linux box ,
but  goes wrong since this morning .
Do you have any idea what is wrong with it ?
 I really appreciated  if you can give me some help.


Best  regards,
--
Anna




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