xp cannot find roaming profile on samba srv

[mattoid]

Greetings
I am a relative noob at this Linux thing, and a first-timer at Samba.
I have the samba server up and running, and the windows and linux machines can both access shares on each other. SELinux is installed but disabled. My windows box is running XP pro, and it has been successfully entered into the domain.
My problem is that when I try to log in to the domain from my xp box, I get an error message:
"Windows cannot locate the server copy of your roaming profile and is attempting to log you on with your local profile."
then another error;
"Windows cannot find your local profile and is logging you on with a temporary one."
We get this message at work when roaming profiles have corrupted, but that is on Windows servers. I suspect this is to do with either the paths I have specified in samba.conf, or that there is no default profile specified.
Any help would be most welcome.

my samba.conf;
_____________________________________________

#Global parameters
[global]
workgroup = workgroup
netbios name = littlewhite
encrypt passwords = yes
;this tells samba that security must be set to user level
security = user

;samba is the domain and local master browser
os level = 65
preferred master = yes
domain master = yes
local master = yes
domain logons = yes
logon path = \\%l\profiles\%u

;automatically maps the home directory of the user, can be any drive letter that you want. \\littlewhite is the samba server netbios name.
logon drive = h:
logon home = \\littlewhite\%u
hosts allow = 127.0.0.1 192.168.1.99

#does not seem to like these although they are from a set example
;domain admins
;domain admin group = @littlewhite
;domain admin users = root

;necessary share for domain logon
[netlogon]
; comment = netlogon service
path = /home/netlogon
guest ok = no
writable = no
share modes = no

[profiles]
path = /home/profiles
read only = no
create mask = 0600
directory mask = 0700

[homes]
path = /home
read only = no
browsable = no

[music]
path = /data/mp3
browsable = yes
write list = mattoid

[apps]
path = /data/apps
browsable = yes
valid users = @admins, root
write list = @admins, root

[everyone]
path = /data
read only = no
browsable = yes

[watchman]

Some simple things to check. (If you have already done these then don't be offended).

1. Make sure that the user exists in smbpasswd

smbpasswd -a username

2. make sure that the home directory exists and is owned by the user

mkdir /home/username
chown username /home/username

3. If the home directory was copied from a windows box, change owner with the recursive option.

chown -R username /home/username

We have a samba PDC here and whenever I see that error it is because of one of the above.

[mattoid]

Watchman
thanks for the post;
I re-ran all three as you suggest, all seem ok. I managed to copy a profile from windows into the /home directory by creating a user named 'root' on the windows machine with the same password as on he samba server. I still get the same error message when I try to log onto the domain. Also, the option to change to a roaming profile is greyed out.
Can you tell me; should I be able to log directly into the samba box with the unix username/password created for samba?

thanks again.