Samba mount error 13 = permission denied => only for other users?

Hello,

I've got a freebsd server which runs samba. This samba share has file permissions and samba permissions "activated". Everything works well on the ubuntu system administrator account( the one where i can use sudo), but not on the other user accounts i've added...
When i do mount /home/bram/nas with the user bram everything is fine, but for the user i get:

mount error 13: Permission denied
Check the mount.cifs(8) manual page

I've done this more about this later, first some info:

[CODE]bram@katia-desktop:~$ mount /home/bram/nas/
bram@katia-desktop:~$ df -h
Bestandssysteem Grtte Gebr Besch Geb% Aangekoppeld op
/dev/sda3 92G 18G 70G 21% /
tmpfs 252M 0 252M 0% /lib/init/rw
varrun 252M 332K 251M 1% /var/run
varlock 252M 0 252M 0% /var/lock
udev 252M 2,7M 249M 2% /dev
tmpfs 252M 224K 251M 1% /dev/shm
lrm 252M 2,0M 250M 1% /lib/modules/2.6.27-9-generic/volatile
//192.168.0.10/main 1,4T 648G 719G 48% /home/bram/nas
bram@katia-desktop:~$
[/CODE]

Here is a comparization of the two users:

[CODE]bram@katia-desktop:~$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
#[cut out not relevant]

# NAS Server
//192.168.0.10/main /home/bram/nas cifs credentials=/home/bram/.smbpasswd,iocharset=utf8,file_mode=0777,dir_mode=0777,uid=bram,gid=bram,noauto,user 0 0
//192.168.0.10/main /home/katia/nas cifs credentials=/home/katia/.smbpasswd,iocharset=utf8,file_mode=0777,dir_mode=0777,uid=katia,gid=katia,noauto,user 0 0
//192.168.0.10/main /home/hanne/nas cifs credentials=/home/hanne/.smbpasswd,iocharset=utf8,file_mode=0777,dir_mode=0777,uid=hanne,gid=hanne,noauto,user 0 0
//192.168.0.10/main /home/laura/nas cifs credentials=/home/laura/.smbpasswd,iocharset=utf8,file_mode=0777,dir_mode=0777,uid=laura,gid=laura,noauto,user 0 0
bram@katia-desktop:~$ sudo cat /home/bram/.smbpasswd /home/katia/.smbpasswd

[sudo] password for bram:
username=bram
password=xxxxxxxxxxxx
username=katia
password=xxxxxxxxxxxxx

bram@katia-desktop:~$ sudo ls -ld /home/bram/nas /home/katia/nas
drwxr-xr-x 2 bram bram 4096 2008-12-01 23:54 /home/bram/nas
drwxr-xr-x 2 katia katia 4096 2008-12-01 23:57 /home/katia/nas

bram@katia-desktop:~$ sudo ls -ld /home/bram/.smbpasswd /home/katia/.smbpasswd
-rw-r--r-- 1 bram bram 36 2008-12-01 22:38 /home/bram/.smbpasswd
-rw-r--r-- 1 katia katia 38 2008-12-01 23:42 /home/katia/.smbpasswd[/CODE]

As you can see, everything is the same? I've also tried to activate some more user rights in users/groups but that doesn't help...
I did search after another solution and found that the nounix option could help..but still the same error :(
I really don't get the issue...maybe it is a bug? I

and yes, I've read [URL="http://ubuntuforums.org/showthread.php?t=288534"]this[/URL] thread off course...
I can also read in the cifs page that when using the option user it tries to apply the user on currently logged in...the user option in my fstab is for my ubuntu so that every user can mount it...and the credentials are used to specify the samba user. Maybe there is going something wrong there?
It must be some kind of a permission but i really can't find which one :(