Apache in Nginx server

[etrader]

I removed Apache by "yum remove httpd" before installing Nginx. But
php-fpm processes are associated with Apache (instead of Nginx) as (as
seen by top command)


 1590 root      21   0 13624 2096  340 S  0.0  0.4   0:00.00 nginx
 1592 nginx     15   0 13840 2984  992 S  0.0  0.6   0:00.40 nginx
 3591 apache    16   0 21348 6172 3600 S  0.0  1.2   0:36.20 php-fpm
 7200 apache    15   0 21604 6320 3620 S  0.0  1.2   0:35.27 php-fpm
 9980 apache    16   0 21596 6124 3556 S  0.0  1.2   0:13.14 php-fpm
11382 apache    15   0 21540 6160 3536 S  0.0  1.2   0:04.33 php-fpm
11477 apache    15   0 21700 6224 3524 S  0.0  1.2   0:04.67 php-fpm
11484 apache    18   0 21584 6188 3508 S  0.0  1.2   0:04.80 php-fpm


Is it normal? why Apache is still alive in my server?

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,205917,205917#msg-205917