I'm facing php defunct !!!

root@rulez [~]# ps auxZ | grep 'Z'
LABEL USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
- nobody 11502 0.0 0.0 0 0 ? Z 17:57 0:00 [httpd] <defunct>
- anabico 11517 0.0 0.0 0 0 ? Z 17:57 0:00 [php] <defunct>
- root 11520 0.0 0.0 3916 752 pts/0 R+ 17:57 0:00 ps auxZ
- root 11521 0.0 0.0 5256 664 pts/0 R+ 17:57 0:00 grep Z

top - 18:04:50 up 2 days, 11:38, 1 user, load average: 0.98, 0.62, 0.50
Tasks: 185 total, 1 running, 182 sleeping, 0 stopped, 2 zombie
Cpu(s): 11.8% us, 3.2% sy, 0.0% ni, 44.4% id, 40.4% wa, 0.3% hi, 0.0% si
Mem: 1034628k total, 290652k used, 743976k free, 4468k buffers
Swap: 3148700k total, 116596k used, 3032104k free, 69636k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
12222 anabico 16 0 0 0 0 Z 9.3 0.0 0:00.28 php <defunct>
12221 anabico 17 0 0 0 0 Z 8.0 0.0 0:00.24 php <defunct>
32523 mysql 11 -5 192m 119m 1400 S 2.3 11.8 0:39.58 mysqld
12220 anabico 17 0 10644 6124 1692 S 2.3 0.6 0:00.07 php
14894 mysql 10 -5 192m 119m 1400 D 1.7 11.8 2:24.48 mysqld
2130 nobody 15 0 7300 2616 2140 S 0.3 0.3 0:32.39 httpd
14896 mysql 10 -5 192m 119m 1400 S 0.3 11.8 2:43.20 mysqld
32665 mysql 11 -5 192m 119m 1400 S 0.3 11.8 0:33.24 mysqld
32687 mysql 10 -5 192m 119m 1400 S 0.3 11.8 0:40.35 mysqld
12103 nobody 16 0 7168 2540 2104 S 0.3 0.2 0:00.01 httpd
1 root 16 0 1664 444 412 S 0.0 0.0 0:08.58 init
2 root RT 0 0 0 0 S 0.0 0.0 0:01.08 migration/0
3 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
4 root RT 0 0 0 0 S 0.0 0.0 0:00.19 migration/1
5 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/1
6 root 5 -10 0 0 0 S 0.0 0.0 0:00.05 events/0
7 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 events/1
8 root 10 -10 0 0 0 S 0.0 0.0 0:00.00 khelper
9 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 kacpid
38 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 kblockd/0
39 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 kblockd/1
40 root 15 0 0 0 0 S 0.0 0.0 0:00.00 khubd
49 root 16 0 0 0 0 S 0.0 0.0 0:00.01 pdflush
50 root 15 0 0 0 0 S 0.0 0.0 0:00.69 pdflush
51 root 15 0 0 0 0 S 0.0 0.0 0:34.99 kswapd0
52 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 aio/0
53 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 aio/1
127 root 25 0 0 0 0 S 0.0 0.0 0:00.00 kseriod
188 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 ata/0
189 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 ata/1
191 root 24 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_0
192 root 25 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_1
193 root 25 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_2
194 root 25 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_3
217 root 15 0 0 0 0 S 0.0 0.0 0:10.88 kjournald
957 root 6 -10 1844 340 336 S 0.0 0.0 0:00.01 udevd
1289 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 kauditd
1344 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 kmirrord
1345 root 7 -10 0 0 0 S 0.0 0.0 0:00.00 kmir_mon
1368 root 16 0 0 0 0 S 0.0 0.0 0:00.48 kjournald
1369 root 19 0 0 0 0 S 0.0 0.0 0:00.00 kjournald
1370 root 15 0 0 0 0 S 0.0 0.0 0:07.12 kjournald
1371 root 15 0 0 0 0 S 0.0 0.0 0:01.09 kjournald
1372 root 15 0 0 0 0 S 0.0 0.0 0:09.22 kjournald
1373 root 15 0 0 0 0 S 0.0 0.0 0:14.13 kjournald
1799 root 16 0 2380 556 492 S 0.0 0.1 0:05.11 syslogd
1803 root 16 0 2096 384 380 S 0.0 0.0 0:00.00 klogd
1813 root 16 0 2484 444 392 S 0.0 0.0 0:00.10 irqbalance
1838 root 16 0 5492 768 740 S 0.0 0.1 0:00.01 rpc.idmapd
1906 root 19 0 2620 420 416 S 0.0 0.0 0:00.00 acpid