Hi all, I have solved the problem. The problem wasn't Hadoop but my network setup. I have used my laptop (via wlan) as a client and it seems like the wlan gateway has a firewall which blocked the connection. After I had connected my laptop by wire everything works! :-)
bes wishes & thanks a lot for all your help and useful mails! Björn -- Björn Schießle Support Free Software, join FSFE's Fellowship (fellowship.fsfe.org) Buy books and support Free Software (wiki.fsfe.org/SupportPrograms)