Profile showing with ldap

Hi
I installed ejabberd on windows. I used Ldap for authentication ,user information. Everything is fine except one thing. Sometimes when i want to look at the profile of a user, i cannot see any information. But normally it is showing. After a moment it is showing. And it is not specific to one user. It may show all the profile but also there is a probability not to showing all profiles. I cannot understand when it happens. Maybe randomly? Here is my ejabberd.conf file. I also expecting some advice about my conf file if there is an existing mistake. Thanx to evryone.

% $Id: $

%override_acls.

% Users that have admin access. Add line like one of the following after you
% will be successfully registered on server to get admin access:
{acl, admin, {user, "admin"}}.

% Blocked users:
%{acl, blocked, {user, "test"}}.

% Local users:
{acl, local, {user_regexp, ""}}.

% Another examples of ACLs:
%{acl, jabberorg, {server, "jabber.org"}}.
%{acl, aleksey, {user, "aleksey", "jabber.ru"}}.
%{acl, test, {user_regexp, "^test"}}.
%{acl, test, {user_glob, "test*"}}.

% Everybody can create pubsub nodes
{access, pubsub_createnode, [{allow, all}]}.

% Only admins can use configuration interface:
{access, configure, [{allow, admin}]}.

% Every username can be registered via in-band registration:
% You could replace {allow, all} with {deny, all} to prevent user from using
% in-band registration
{access, register, [{deny, all}]}.

% After successful registration user will get message with following subject
% and body:
%{welcome_message,
% {"Welcome!",
% "Welcome to Instant Messaging server localhost. "
% "For information about ejabberd visit http://www.process-one.net/"}}.
% Replace them with 'none' if you don't want to send such message:
{welcome_message, none}.

% List of people who will get notifications about registered users
%{registration_watchers, ["admin1@localhost",
% "admin2@localhost"]}.

% Only admins can send announcement messages:
{access, announce, [{allow, admin}]}.

% Only non-blocked users can use c2s connections:
{access, c2s, [{deny, blocked},
{allow, all}]}.

% Set shaper with name "normal" to limit traffic speed to 1000B/s
{shaper, normal, {maxrate, 1000}}.

% Set shaper with name "fast" to limit traffic speed to 50000B/s
{shaper, fast, {maxrate, 50000}}.

% For all users except admins used "normal" shaper
{access, c2s_shaper, [{none, admin},
{normal, all}]}.

% For all S2S connections used "fast" shaper
{access, s2s_shaper, [{fast, all}]}.

% Admins of this server are also admins of MUC service:
{access, muc_admin, [{allow, admin}]}.

% All users are allowed to use MUC service:
{access, muc, [{allow, all}]}.

% This rule allows access only for local users:
{access, local, [{allow, local}]}.

% Authentication method. If you want to use internal user base, then use
% this line:
%{auth_method, internal}.

% For LDAP authentication use these lines instead of above one:
{auth_method, ldap}.
{ldap_servers, ["10.xxx.xxx.xxx"]}. % List of LDAP servers
{ldap_uidattr, "uid"}. % LDAP attribute that holds user ID
{ldap_base, "dc=example,dc=com"}. % Search base of LDAP directory
{ldap_rootdn, "cn=xxxxxxx"}. % LDAP manager
{ldap_password, "xxxxxxx"}. % Password to LDAP manager
{ldap_filter, "(AccountStatus=enabled)"}.
% For authentication via external script use the following:
%{auth_method, external}.
%{extauth_program, "/path/to/authentication/script"}.

% For authentication via ODBC use the following:
%{auth_method, odbc}.
%{odbc_server, "DSN=ejabberd;UID=ejabberd;PWD=ejabberd"}.

% Host name:
{hosts, ["localhost"]}.

%% Define the maximum number of time a single user is allowed to connect:
{max_user_sessions, 10}.

%% Anonymous login support:
%% auth_method: anonymous
%% anonymous_protocol: sasl_anon|login_anon|both
%% allow_multiple_connections: true|false
%%{host_config, "public.example.org", [{auth_method, anonymous},
%% {allow_multiple_connections, false},
%% {anonymous_protocol, sasl_anon}]}.
%% To use both anonymous and internal authentication:
%%{host_config, "public.example.org", [{auth_method, [anonymous, internal]}]}.

% Default language for server messages
% TODO: Use installer selection
{language, "en"}.

% Listened ports:
{listen, [
%{5222, ejabberd_c2s, [{access, c2s},
% {max_stanza_size, 65536},
% {shaper, c2s_shaper}]},
%% Use this line to enable SSL:
%%{5223, ejabberd_c2s, [{access, c2s}, {max_stanza_size, 65536}, tls, {certfile, "C:\server.pem"}]},
%%
%% Use those lines instead for TLS support:
%%{5222, ejabberd_c2s, [{access, c2s}, {shaper, c2s_shaper},
%% starttls, {certfile, "C:\Program Files\ejabberd-1.1.2\conf\server.pem"}]},
{5222, ejabberd_c2s, [{access, c2s},
starttls, {certfile, "/server.pem"}]},
%% {5223, ejabberd_c2s, [{access, c2s},
%% tls, {certfile, "C:\server.pem"}]},

%% Remove this line if you want to prevent s2s connections:
%%{5269, ejabberd_s2s_in, [{shaper, s2s_shaper}, {max_stanza_size, 131072}]},

%% remove http_poll to remove support for http polling
%% remove web_admin to disable admin interface:
{5280, ejabberd_http, [http_poll, web_admin]}
%% This is an example on how to define an external service/transport:
%% {8888, ejabberd_service, [{access, all},
%% {hosts, ["icq.localhost", "sms.localhost"],
%% [{password, "secret"}]}]}
]}.

% If SRV lookup fails, then port 5269 is used to communicate with remote server
{outgoing_s2s_port, 5269}.

% Used modules:
{modules,
[
{mod_register, [{access, register}]},
{mod_roster, []},
{mod_privacy, []},
{mod_adhoc, []},
{mod_configure, []}, % Depends on mod_adhoc
{mod_configure2, []},
{mod_disco, []},
{mod_stats, []},
{mod_vcard_ldap, [{ldap_rootdn, ""},
{ldap_password, ""},
{ldap_base, "cn=birimsizler,dc=example,dc=com"},
{ldap_filter, "(AccountStatus=enabled)"},
%{ldap_uidattr, "%u"},
{ldap_uidattr_format, "%u"},
{ldap_vcard_map,
[{"NICKNAME", "%u", ["nickname"]}, % just use user's part of JID as his nickname
{"GIVEN", "%s", ["givenname"]},
{"FAMILY", "%s", ["sn"]},
{"FN", "%s, %s", ["sn", "givenName"]}, % example: "Smith, John"
{"EMAIL", "%s", ["mail"]}]},
%% Search form
{ldap_search_fields,
[{"User", "uid"},
{"Name", "givenName"},
{"Family Name", "sn"},
{"Email", "mail"}]},
%% vCard fields to be reported
%% Note that JID is always returned with search results
{ldap_search_reported,
[{"Full Name", "FN"}]}]},
{mod_offline, []},
{mod_announce, [{access, announce}]}, % Depends on mod_adhoc
{mod_echo, [{host, "echo.localhost"}]},
{mod_private, []},
{mod_irc, []},
% Default options for mod_muc:
% host: "conference." ++ ?MYNAME
% access: all
% access_create: all
% access_admin: none (only room creator has owner privileges)
{mod_muc, [{access, muc},
{access_create, muc},
{access_admin, muc_admin}]},
% {mod_muc_log, []},
% {mod_shared_roster, []},
{mod_pubsub, [{access_createnode, pubsub_createnode}]},
{mod_time, []},
{mod_last, []},
%%{mod_xmlrpc,[{port, 4560},{timeout, 5000}]},
{mod_version, []}
]}.

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