proftpd+mysql 不能匿名登陆~

Question

当去掉连接mysql的代码的时候 就可以匿名登陆，，一旦添加上去就不能登陆了，但是可以使用mysql验证登陆。

下面是我的proftpd.conf文件   大家帮我看看有什么错误吗？
#
# To have more informations about Proftpd configuration
# look at : http://www.proftpd.org/
#
# This is a basic ProFTPD configuration file (rename it to
# 'proftpd.conf' for actual use.  It establishes a single server
# and a single anonymous login.  It assumes that you have a user/group
# "nobody" and "ftp" for normal operation and anon.

ServerName                        "ProFTPD Default Installation"
ServerType                        standalone
DefaultServer                        on

# Port 21 is the standard FTP port.
Port                                21

# Umask 022 is a good standard umask to prevent new dirs and files
# from being group and world writable.
Umask                                022

# To prevent DoS attacks, set the maximum number of child processes
# to 30.  If you need to allow more than 30 concurrent connections
# at once, simply increase this value.  Note that this ONLY works
# in standalone mode, in inetd mode you should use an inetd server
# that allows you to limit maximum number of processes per service
# (such as xinetd).
MaxInstances                        30

# Set the user and group under which the server will run.
User                                nobody
Group                                nogroup

# To cause every FTP user to be "jailed" (chrooted) into their home
# directory, uncomment this line.
DefaultRoot ~

# Normally, we want files to be overwriteable.
<Directory />
  AllowOverwrite                on
</Directory>

# A basic anonymous configuration, no upload directories.  If you do not
# want anonymous users, simply delete this entire <Anonymous> section.
#########################################################################
#                                                                       #
# Uncomment lines with only one # to allow basic anonymous access       #
#                                                                       #
#########################################################################

<Anonymous ~ftp>
   User                                ftp
  Group                                ftp

  ### We want clients to be able to login with "anonymous" as well as "ftp"
  UserAlias                        anonymous ftp

  ### Limit the maximum number of anonymous logins
   MaxClients                        10

  ### We want 'welcome.msg' displayed at login, and '.message' displayed
  ### in each newly chdired directory.
   DisplayLogin                        .welcome.msg
   DisplayFirstChdir                .message

  ### Limit WRITE everywhere in the anonymous chroot
  # <Limit WRITE>
  #   DenyAll
  # </Limit>
</Anonymous>

DefaultRoot ~
SQLAuthTypes Plaintext Crypt
SQLAuthenticate users* groups*
SQLConnectInfo ftpdb@localhost proftpd password
SQLUserInfo ftpuser userid passwd uid gid homedir shell
SQLGroupInfo ftpgroup groupname gid members
SQLMinID 500
SQLHomedirOnDemand on
SQLLog PASS updatecount
SQLNamedQuery updatecount UPDATE "count=count+1, accessed=now() WHERE userid='%u'" ftpuser
SQLLog STOR,DELE modified
SQLNamedQuery modified UPDATE "modified=now() WHERE userid='%u'" ftpuser
DeferWelcome on
RootLogin off
RequireValidShell off