sorry i?m not posting the answer for my problems. the answer comes from
www.vbulletin-germany.com my provider :
www.versatel.de has many problems with the dns server.
i change the dns ip in my tcp/ip lan connection and everythink is ok.
but i called my provider, he says thats a problem we have a long time but we work on it , ha ha ha
greetings from germany
tekram