errorr bad file number

[10ft]

I installed samba (CIFS server) on a B2600 with hpux 11.0.
When i try to copy a share of samba (with a large number of files and directory) i have problem.
My client is a win2000 .
On log.smb i read
Failed to set socket options TCP_NODELAY (Error bad file number)

The entry Socket options on my smb.conf is default.
Any idea ?
Is first time i have a problem like this with samba that i use normaly
to copy big archive.

Thanks