So many child process of mysqld (version 4.0.21)

[Azhar H.]

I upgread mysql 3.23.56 to 4.0.21, succesfully upgraded. But, I
observed abnormal behaviour of mysql (or may be i dont know). Thing
is, in mysql 3.23.56 when I start service, only one procses exist [
check thru command ps -A | grep mysql* ] but when I upgraded to mysql
(4.0.21). Above command shows me 25+ mysqld child process. Is this is
correct or any problem. Logs [/var/log/mysql.log] shows me successful
start/stop.

Thanking in advance.

Azhar H.