Encontrei isso no site do Apache ( link )
Upon startup of httpd, it looks for the file suexec in the directory defined by the --sbindir option (default is "/usr/local/apache/sbin/suexec"). If httpd finds a properly configured suEXEC wrapper, it will print the following message to the error log:
[notice] suEXEC mechanism enabled (wrapper: /path/to/suexec) If you don't see this message at server startup, the server is most likely not finding the wrapper program where it expects it, or the executable is not installed setuid root.
If you want to enable the suEXEC mechanism for the first time and an Apache HTTP Server is already running you must kill and restart httpd. Restarting it with a simple HUP or USR1 signal will not be enough.
If you want to disable suEXEC you should kill and restart httpd after you have removed the suexec file.
Eu removi meu arquivo suexec e reiniciei o apache