Radius Auth problem (it works in general but..)

Hello,

Netflow Analyzer configured with Radius Auth:

First I have to say, it works perfect but one user.
I added a new user configured to use Radius Auth, gave him the role he need to be in. He tried to logon and always he gets the message, user or password wrong. With the same user/password combination he has access to our domain (like all other users I had added before to use Netflow Analyzer)

For all other users I have added already it works perfect but him and I have no clue what I can do (ok, I can change the auth to local but thats just a workaround and not a solution :-) )

The access_log.txt says nothing about access denied or something equal.

Any hints would be welcome.

Kindly Regards, Peer-Mario