Mountain Lion OSX slow SMB / CIFS / Windows network share access

Mountain Lion OSX slow SMB / CIFS / Windows network share access?

$ sudo bash
# if [ -f /etc/smb.conf ]; then mv /etc/smb.conf /etc/smb.conf.bak; fi
# echo "[default]" > /etc/smb.conf
# echo "notify_off=yes" >> /etc/smb.conf