[Samba] slow samba performance

[Gurnish Anand]

Hello,
   We upgraded from Samba 2.2.8 to 3.0 and now Samba performance is 
really slow !!
It takes awefully long to load the profiles than it did before. Even 
browsing the shares has lag.

Please give me some tips on how I should increase this performance. I 
have attached the smb.conf file. All the parameters are the same. And we 
are using a much faster system too.


[global]
        workgroup = Bank
        netbios name = fileserver
;       server string = primary domain server running samba%v
        server string = fileserver
        security = user
        read raw = no
        min password length = 6
        obey pam restrictions = Yes
        admin users = gurnish @employee
        pam password change = Yes
;       username map = /etc/passwd
        smb passwd file = /etc/samba/smbpasswd
        passwd program = /usr/bin/passwd %u
        encrypt passwords = Yes
        passwd chat = *New*Unix*Password* %n\n 
*Retype*new*Unix*password*%n\n *passwd: all authentication tokens 
updated successfully* %n
        passwd chat debug = Yes
        username level = 10
        unix password sync = no
        log level = 2
        case sensitive = no
        log file = /var/log/samba/log.%m
        max log size = 50
        time server = Yes
        unix extensions = Yes
        socket options = TCP_NODELAY SO_KEEPALIVE IPTOS_LOWDELAY 
SO_SNDBUF=8576 SO_RCVBUF=8576
        admin users = @employee, administrator, @administrators
        add user script = /usr/sbin/useradd -d /dev/null -g machines -c 
'Machine Account' -s /bin/false -M %u
        logon script = netlogon.bat
        logon path = \\%L\profile\%u.pds
        logon home =
        domain logons = Yes
        os level = 64
        preferred master = Yes
        domain master = yes
        wins support = true
        name resolve order = wins lmhosts hosts bcast
        hosts allow = 127.0.0.1 172.16.1.0/255.255.255.0 
192.168.2.0/255.255.255.0
;       hosts allow = 127.0.0.1 192.168.2.0/255.255.255.0
;       password server = None
        hosts deny = 0.0.0.0/0 @web 192.168.2.200
        veto files = /*.mp3/*.divx/*.eml/

[profile]
        path = /home/samba/profile
        force user = %U
        writeable = yes
        create mask = 0600
        directory mask = 0700
        guest ok = Yes
        profile acls = Yes
        browseable = No
        csc policy = disable