I am having overloading problems. Too many connections, and some IP has more than 20 connection at once. I do this command.

netstat -anp |grep 'tcp\|udp' | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n

To get total of connection and this is the output:

      1 106.3.98.81
      1 106.3.98.82
      1 108.171.251.2
      1 110.85.103.207
      1 111.161.30.217
      1 113.53.103.55
      1 119.235.237.20
      1 124.106.19.34
      1 157.55.32.166
      1 157.55.33.49
      1 157.55.34.28
      1 175.141.103.239
      1 180.76.5.59
      1 180.76.5.61
      1 188.235.165.216
      1 205.213.195.70
      1 216.157.222.25
      1 218.93.205.100
      1 222.77.209.105
      1 27.153.148.109
      1 27.159.194.242
      1 27.159.253.71
      1 54.242.122.201
      1 61.172.50.99
      1 65.55.24.239
      1 71.179.78.5
      1 74.125.136.27
      1 74.125.182.30
      1 74.125.182.36
      1 79.112.225.39
      1 93.190.139.208
      2 124.227.191.67
      2 157.55.33.84
      2 157.55.35.34
      2 190.66.3.107
      2 203.87.153.38
      2 220.161.119.3
      2 221.6.15.156
      2 27.153.148.116
      2 27.159.197.0
      2 96.47.224.42
      3 202.14.70.1
      3 218.6.15.42
      3 222.77.218.226
      3 222.77.224.187
      3 37.59.66.100
      3 46.4.181.244
      3 87.98.254.192
      3 91.207.8.62
      4 188.143.233.222
      4 218.108.168.166
      4 221.12.154.18
      4 93.182.157.8
      4 94.142.128.183
      5 180.246.170.187
      5 8.21.6.226
      6 178.137.94.87
      6 218.93.205.112
      7 199.15.234.222
      9
      9 125.253.97.6
     10 178.137.17.196
     11 46.118.192.179
     12 212.79.14.14
     21 72.201.187.135
     27 0.0.0.0

Can anyone give me some directions, my server crashed few times this week because of this.

Thanks.

EDIT:

Alright, my error logs says:

[Thu Oct 18 12:17:39 2012] [error] could not make child process 4842 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4843 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4855 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4856 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4861 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4869 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4872 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4873 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4874 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4875 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4876 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4880 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4882 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4885 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4897 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4900 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4901 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4906 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4907 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4925 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4926 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4927 exit, attempting to continue anyway
[Thu Oct 18 12:17:39 2012] [error] could not make child process 4931 exit, attempting to continue anyway
[Thu Oct 18 12:17:40 2012] [notice] caught SIGTERM, shutting down
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20060613+lfs/curl.iso' - /usr/lib/php5/20060613+lfs/curl.iso: cannot open shared object file: No such file or directory in Unknown on line 0
[Thu Oct 18 12:17:45 2012] [notice] Apache/2.2.9 (Debian) PHP/5.2.6-1+lenny10 with Suhosin-Patch configured -- resuming normal operations

And I have over thousands of line saying:(each has different process id)

[Thu Oct 18 12:17:38 2012] [error] child process 4906 still did not exit, sending a SIGKILL

And I also have line saying:

[Wed Oct 17 09:44:58 2012] [error] server reached MaxClients setting, consider raising the MaxClients setting


<IfModule prefork.c>
StartServers 8
MinSpareServers 5
MaxSpareServers 50
MaxClients 300
MaxRequestsPerChild 5000
</IfModule>