suexec problem

[mbr]

I can't get suexec working...
CentOS 5 + ispCP + Apache/2.2.8+fcgid+php
all installed from packages

during apache start i get "suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)" message, in VirtualHost section i have
<IfModule suexec_module>
SuexecUserGroup user group
</IfModule>
but it's not working.... /var/log/httpd/suexec.log file is clean
how to debug this situation...where "to dig"? help me please...

httpd -M
...
suexec_module (shared)

httpd -V
Server version: Apache/2.2.8 (Unix)
Server built: Jan 22 2008 03:13:24
Server's Module Magic Number: 20051115:11
Server loaded: APR 1.2.12, APR-Util 1.2.12
Compiled using: APR 1.2.8, APR-Util 1.2.8
Architecture: 64-bit
Server MPM: Prefork
threaded: no
forked: yes (variable process count)
Server compiled with....
-D APACHE_MPM_DIR="server/mpm/prefork"
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_SYSVSEM_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D DYNAMIC_MODULE_LIMIT=128
-D HTTPD_ROOT="/etc/httpd"
-D SUEXEC_BIN="/usr/sbin/suexec"
-D DEFAULT_PIDLOG="logs/httpd.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_LOCKFILE="logs/accept.lock"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="conf/mime.types"
-D SERVER_CONFIG_FILE="conf/httpd.conf"