samba - Jul 2010 - [3.4.7/Ubuntu 10.04] Can modify but not create/delete

Hello

I notice I can modify existing files, but not create/delete. I also
notice that after saving a file I modified, Samba sets its access
rights to 744.

nobody.nogroup owns /var/www, with /var/www/. as 755

Logged on from XP as "nobody".

Here's /etc/samba/smb.conf:

=================[global]
workgroup = WORKGROUP
netbios name = LINUX
server string = Samba Server %v
security = user
guest account = nobody
log level = 2

[www]
comment = WWW directory
path = /var/www
browsable = yes
guest ok = yes ;access will be permitted as the default guest user
read only = no
available = yes
public = yes
writable = yes
=================
Any idea why Samba won't let me create/delete files?

Thank you for any tip.

Quoting Gilles (gilles.ganault at free.fr):
> Hello
> 
> I notice I can modify existing files, but not create/delete. I also
> notice that after saving a file I modified, Samba sets its access
> rights to 744.
> 
> nobody.nogroup owns /var/www, with /var/www/. as 755
> 
> Logged on from XP as "nobody".
> 
> Here's /etc/samba/smb.conf:

Look in log files in /var/log/samba, there should be indications
there. Eventually raise the log level to 3 before doing so.