[Samba] Linux vs WinXP SP2

[Guillaume]

I use samba 3.0.10 on my linux box and I would like to access to a winXP 
LSD (it's a kind of light windows based on Service Pack 2 (SP2)).
Unfortunately, it doesn't work although it worked with a SP1 windows. 
Here is what I have done :

$ smbclient -L ip_winxp
....
added interface ip=192.168.0.4 bcast=192.168.0.255 nmask=255.255.255.0
Netbios name list:-
my_netbios_names[0]="PINGPENG"
Client started (version 3.0.10).
Connecting to 192.168.0.8 at port 445
socket option SO_KEEPALIVE = 0
socket option SO_REUSEADDR = 0
socket option SO_BROADCAST = 0
socket option TCP_NODELAY = 1
socket option IPTOS_LOWDELAY = 0
socket option IPTOS_THROUGHPUT = 0
socket option SO_SNDBUF = 16384
socket option SO_RCVBUF = 16384
socket option SO_SNDLOWAT = 1
socket option SO_RCVLOWAT = 1
socket option SO_SNDTIMEO = 0
socket option SO_RCVTIMEO = 0
session request ok
write_socket(3,183)
write_socket(3,183) wrote 183
size=0
smb_com=0x0
smb_rcls=0
smb_reh=0
smb_err=0
smb_flg=0
smb_flg2=0
smb_tid=0
smb_pid=0
smb_uid=0
smb_mid=0
smt_wct=0
smb_bcc=0
protocol negotiation failed

findsmb doesn't print the winxp server


A mounting share test :

$ smbmount //ip_winxp/share_name mount_point
13868: protocol negotiation failed
SMB connection failed

I've got a win 98 box too, but when I try to access the win xp, it says 
that network is busy.

I don't think it's a smb packet signature problem, I've tried with 
packet signature support but it doesn't affect anything.

What is the solution (if there is a solution) ?

Thanks.