FreeBSD 7.0-Stable Crashed with Cacti

[Kalpin Erlangga Silaen]

Dear All,

we face problem with running cacti on FreeBSD 7.0-Stable. From top command output:

last pid:  5836;  load averages:  0.03,  0.17,  0.24                                                                                 up 0+01:17:30  15:24:11
96 processes:  1 running, 95 sleeping
CPU:  0.2% user,  0.0% nice,  1.5% system,  0.0% interrupt, 98.3% idle
Mem: 736M Active, 125M Inact, 127M Wired, 300K Cache, 111M Buf, 3776K Free
Swap: 2014M Total, 2014M Free

  PID USERNAME  THR PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
 1054 root        1  76    0   118M 94916K pfault 1   0:07  0.00% php
 1382 root        1  76    0   110M 87224K pfault 1   0:07  0.00% php
 1740 root        1  76    0   103M 75576K pfault 0   0:06  0.00% php
 2120 root        1  76    0 97160K 74056K pfault 1   0:06  0.00% php
 2451 root        1  76    0 91016K 79316K pfault 1   0:05  0.00% php
 2818 root        1  76    0 83848K 72324K pfault 1   0:05  0.00% php
 3147 root        1  76    0 76680K 64856K pfault 1   0:04  0.00% php
 3511 root        1  76    0 69512K 57836K pfault 1   0:04  0.00% php
 3823 root        1  76    0 62344K 50880K pfault 1   0:03  0.00% php
 4170 root        1  76    0 55176K 43568K pfault 0   0:03  0.00% php
 4513 root        1  76    0 48008K 36480K pfault 1   0:02  0.00% php
 4847 root        1  76    0 40840K 29452K pfault 1   0:02  0.00% php
 5180 root        1  76    0 33672K 22664K pfault 0   0:01  0.00% php
 5810 root        1  -8   19 11696K  9344K piperd 1   0:01  0.00% perl
 5534 root        1  76    0 26504K 15612K pfault 0   0:01  0.00% php
 5811 root        1  -8   19 11876K  9488K piperd 1   0:01  0.00% perl
 5812 root        1  -8   19 11676K  9304K piperd 1   0:01  0.00% perl
 1651 root        1  44    0  8400K  2440K select 1   0:01  0.00% sshd
  839 root        1  44    0 21536K  9152K select 0   0:00  0.00% httpd
  747 root        1  44    0  7372K  4996K select 0   0:00  0.00% perl
  658 root        1  44    0  8808K  4096K select 1   0:00  0.00% snmpd
 5814 root        1  76    0 10588K  4016K pfault 1   0:00  0.00% php
 1655 root        1   8    0  4404K  1600K wait   1   0:00  0.00% bash
  746 mysql      24   4    0 70884K 21936K sbwait 1   0:00  0.00% mysqld
  858 root        1  44    0  5864K  2152K select 1   0:00  0.00% sendmail
 5835 root        1  44    0  3504K  1520K CPU0   0   0:00  0.00% top
  652 root        1  44    0  7824K  3048K select 1   0:00  0.00% snmptrapd
 5809 root        1   8    0  3472K  1008K wait   0   0:00  0.00% sh
 5808 root        1   8    0  3472K  1008K wait   1   0:00  0.00% sh
  870 root        1 -16    0  3200K  1072K vmwait 0   0:00  0.00% cron
 5827 root        1  76   19  3204K  1480K pfault 0   0:00  0.00% rateup
 5828 root        1  76   19  3204K  1472K pfault 0   0:00  0.00% rateup
 5819 root        1  -8    0  3200K  1108K piperd 0   0:00  0.00% cron
 5820 root        1   8    0  3472K  1004K wait   0   0:00  0.00% sh
  577 root        1  44    0  3172K  1008K select 1   0:00  0.00% syslogd
 5823 root        1  76    0 10588K  4112K pfault 1   0:00  0.00% php
 5829 root        1  76   19  3204K  1332K pfault 1   0:00  0.00% rateup

We realized that all cacti process just eat my cpu and memory (STATE: pfault) and my server should be reboot.
Is there any way how to fix it?

Thank you

Kalpin Erlangga Silaen