Thanks for your answer Falko !
It didn't help. I think the problem comes from my machine ( Suse 10.2 + VM server 1.05) !!
No problem when running on an other pc running VMware server 2.0 on Ubuntu 8.04 !!
I have now reinstalled the pc with VMWare server 2.0 on Fedora 9 but .... see other topic
Great thanks for the help.