LinuxQuestions.org - Can't mount nfs- or cifs-share rw in Debian

Server 10.10.10.1 has /store exported for nfs and cifs, debian 3, about 2 years old.
Running Fedora 6 on client I can mount /store with cifs and it is writable.
However, running Debian 4 it is mounted read-only!

Code:

killbill2:~# mount -t cifs 10.10.10.1:/store /mnt/Ready/ -o

username=peterh,uid=501,gid=501,rw,password=

The uid, gid, username and rw options have exactly no effect, removing them changes nothing.
Owner of mounted files is nobody:nogroup, writable only by owner and root.
I have tried numerous options and combinations, no effect.

Then I tried using nfs instead, but same thing plus I don't get right charset (I use iso8859-15).

I'm very puzzled as it works perfectly with Fedora, it has to be Debian that's doing something??