The workflow does not work as my think

[=?gb2312?q?weidong=20chen?=]

each task and sub-workflow ,i have set them as ' NO
general task ' and assign only one user to these task
and sub-workflow.
 
But in runtime , i found not only the assigned user
,but all other user can get the workflow item.abdthe
assigned user receieved two workflow item(same each
other).
 
I have fount that not only the assigned user get the
workflow item ,also other can get.
 
i am a new user in workflow.
 
what is the reason?
any reply will be thanks.
>
>weidong
>
>20010429