[Samba] Browsing problem

[Ashish Tyagi]

Hi 

       I am using samba-3.0.11-5 in a windows 2003 domain. every thing
is working fine but some times  when users from windows XP machines try
to browse samba shares from 'run' menu by using \\filer01 or
\\IP of samba server, they cant go to shares.they get error 'The
specified format is not correct '. this problem get resolved
automatically after some time and it happens again after some days. 

Here is my smb.conf file

[global]
workgroup = DOMAIN!
server string = Filer01
netbios name = filer01
wins server = XXX.XXX.XXX.XXX
password server = XXX.XXX.XXX.XXX
realm = DOMAIN1.COM
log file = /var/log/samba/%m.log
max log size = 0
map to guest = Bad User
guest account = ofguest
encrypt passwords = yes
security = ads
smb passwd file = /etc/samba/smbpasswd
domain master = no
local master = no
prefered master  = no
client schannel  = no
unix password sync = yes
passwd program = /usr/bin/passwd %u
passwd chat = *New*password* %n\n *Retype*new*password* %n\n
*passwd:*all*authentication*tokens*updated*successfully*
pam password change = yes
obey pam restrictions = yes
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
load printers = no

winbind separator = +
idmap uid = 1000-33554431
idmap gid = 1000-33554431
winbind uid = 1000-33554431
winbind gid = 1000-33554431
winbind cache time = 15
winbind enum users = yes
winbind enum groups = yes
template homedir = /mnt/filer/homes/homes/%U
template shell = /sbin/nologin

Thanks