Me a newbie..! this is my issue

I am using fedora core 6

I installed php web server... and i have web server installed

When i issue commands;

[root@localhost /]# /etc/init.d/httpd start
Starting httpd: audit(1173359846.930:9): avc: denied { execstack } for pid=2
98 comm="httpd" scontext=root:system_r:httpd_t:s0 tcontext=root:system_r:httpd_
:s0 tclass=process

and PHP-Web server
[root@localhost /]# /etc/init.d/httpd restart
Stopping httpd: [FAILED]
Starting httpd: audit(1173360859.581:10): avc: denied { execstack } for pid=
240 comm="httpd" scontext=root:system_r:httpd_t:s0 tcontext=root:system_r:httpd
t:s0 tclass=process

Can someone guide me to fix these two errors please.