"TOP" What's up?

Advice Needed

I just got my first Dedicated Server today, (almost complete newbie) I used SSh and ran TOP and below is the output. Any ideas as to why so many things are running, and the cpu usage is so high?

Code: 
11:12pm  up  1:48,  1 user,  load average: 1.22, 1.25, 1.19
59 processes: 56 sleeping, 3 running, 0 zombie, 0 stopped
CPU states: 51.4% user, 48.5% system,  0.0% nice,  0.0% idle
Mem:   511312K av,   63076K used,  448236K free,       0K shrd,    1524K buff
Swap:  530104K av,       0K used,  530104K free                   36164K cached

  PID USER     PRI  NI  SIZE  RSS SHARE STAT  LIB %CPU %MEM   TIME COMMAND
  814 root      20   0   472  472   396 R       0 73.8  0.0  81:19 portsentry
  377 root      12   0   528  528   428 S       0 25.9  0.1  26:46 syslogd
 2124 root       9   0   872  872   672 R       0  0.1  0.1   0:00 top
    1 root       8   0   476  476   404 S       0  0.0  0.0   0:05 init
    2 root       9   0     0    0     0 SW      0  0.0  0.0   0:00 keventd
    3 root      19  19     0    0     0 SWN     0  0.0  0.0   0:00 ksoftirqd_CPU0
    4 root       9   0     0    0     0 SW      0  0.0  0.0   0:00 kswapd
    5 root       9   0     0    0     0 SW      0  0.0  0.0   0:00 kreclaimd
    6 root       9   0     0    0     0 SW      0  0.0  0.0   0:00 bdflush
    7 root       9   0     0    0     0 SW      0  0.0  0.0   0:00 kupdated
    9 root       9   0     0    0     0 SW      0  0.0  0.0   0:00 khubd
  386 root       9   0  1076 1076   388 S       0  0.0  0.2   0:00 klogd
  400 nobody     9   0   648  648   524 S       0  0.0  0.1   0:00 identd
  404 nobody     9   0   648  648   524 S       0  0.0  0.1   0:00 identd
  405 nobody     9   0   648  648   524 S       0  0.0  0.1   0:00 identd
  406 nobody     9   0   648  648   524 S       0  0.0  0.1   0:00 identd
  407 nobody     9   0   648  648   524 S       0  0.0  0.1   0:00 identd
  418 root       8   0   624  624   512 S       0  0.0  0.1   0:00 crond
  432 root       9   0   488  488   412 S       0  0.0  0.0   0:00 inetd
  446 nobody     9   0   896  896   700 S       0  0.0  0.1   0:00 proftpd
  455 root       9   0  1200 1200  1060 S       0  0.0  0.2   0:00 sshd
  471 root       9   0   532  532   448 S       0  0.0  0.1   0:00 lpd
  508 root       9   0  1096 1096   916 S       0  0.0  0.2   0:00 antirelayd
  522 root       8   0  1656 1656  1072 S       0  0.0  0.3   0:00 chkservd
  543 root       9   0  2920 2920  2736 S       0  0.0  0.5   0:00 httpd
  563 root       9   0  3588 3588  2136 S       0  0.0  0.7   0:00 cppop
  609 root       9   0  1588 1584  1192 S       0  0.0  0.3   0:00 exim
  640 root       9   0   832  832   664 S       0  0.0  0.1   0:00 safe_mysqld
  664 mysql      9   0  1628 1628  1196 S       0  0.0  0.3   0:00 mysqld
  666 mysql      8   0  1628 1628  1196 S       0  0.0  0.3   0:00 mysqld
  667 mysql      9   0  1628 1628  1196 S       0  0.0  0.3   0:00 mysqld
  668 root      18  19  2364 2364  2036 S N     0  0.0  0.4   0:00 cpaneld
  669 root       9   0  2360 2360  2028 S       0  0.0  0.4   0:00 cpaneld
  679 root       9   0  1728 1728  1036 S       0  0.0  0.3   0:00 webmaild
  710 nobody     9   0  1776 1776  1060 S       0  0.0  0.3   0:00 entropychat
  719 nobody     9   0   604  604   360 S       0  0.0  0.1   0:00 melange
  741 nobody     9   0  1544 1544  1140 S       0  0.0  0.3   0:00 stunnel

 

 

 

 

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