one apache process looping

Hi,

We have one apache process that is constantly starting after apache
restart.
this process takes sometimes 99% or cpu, and sometimes just 15%.

when I try to strace it, I get:
[root@web1 root]# strace -p 7940
--- SIGSTOP (Stopped (signal)) ---
select(0, NULL, NULL, NULL, {0, 742140}) = 0 (Timeout)
time(NULL) = 1057141901
kill(10344, SIGUSR1) = 0
wait4(-1, 0xbffff88c, WNOHANG, NULL) = 0
select(0, NULL, NULL, NULL, {1, 0}) = ? ERESTARTNOHAND (To be
restarted)
--- SIGCHLD (Child exited) ---
select(0, NULL, NULL, NULL, {0, 996030}) = 0 (Timeout)
time(NULL) = 1057141902
kill(10345, SIGUSR1) = 0
wait4(-1, [WIFEXITED(s) && WEXITSTATUS(s) == 0], WNOHANG, NULL) =
10344
wait4(-1, 0xbffff88c, WNOHANG, NULL) = 0
select(0, NULL, NULL, NULL, {1, 0}) = ? ERESTARTNOHAND (To be
restarted)
--- SIGCHLD (Child exited) ---
select(0, NULL, NULL, NULL, {0, 996030}) = 0 (Timeout)
time(NULL) = 1057141903
kill(10345, SIGUSR1) = 0
wait4(-1, [WIFEXITED(s) && WEXITSTATUS(s) == 0], WNOHANG, NULL) =
10345
wait4(-1, 0xbffff88c, WNOHANG, NULL) = 0
select(0, NULL, NULL, NULL, {1, 0}) = 0 (Timeout)
time(NULL) = 1057141904
kill(10343, SIGUSR1) = 0
wait4(-1, 0xbffff88c, WNOHANG, NULL) = 0
select(0, NULL, NULL, NULL, {1, 0}) = ? ERESTARTNOHAND (To be
restarted)
--- SIGCHLD (Child exited) ---
select(0, NULL, NULL, NULL, {0, 996030} <unfinished ...>

I haven't seen this beheivour before. What is this? Is this a bug in
one of our scripts, what is a way to tied it to the appropriate script
and debug it further?

Thanks in advance,

-G