Mystery effect: WI not seen in Inbox

[Schmidinger, Heinz (Unaxis IT BZ)]

Hallo together,
 
 
one of my users reports that he should have some WF's but he doesn't see it
in his inbox.
I have checked the WF-Protocol, the WF is assoigend to the User as selected
Agent, the WI is in Status 'READY'.
 
If I do a generic selection with SWI5, these WI's are not selected.
 
SWU_OBUF and refreh org. in the Workplace doesn't change the result.
 
Has anybody an idee what is running wrong with this user. I have never seen
this problem with another user.
 
Any idee appreciated !
 
Thanks in advance
 
Greetings
 
heinz