For sure, that´s it! With the "stone-age thing" the time to initialize the DU drop down to twenty seconds.
Wireless-LAN is realy not my favorite way.
First attemps failed by using LAN for data transfer and W-LAN for Internet connection.
When LAN still run the Internet allways disconnected.
It seems to me Win7 don´t realy like other OS for network installation then Win7.
But for now i´ve got it.
Thanks and best regards again,
Thomas