Can't see procesess running on 'top'

["Joel TAQUEBAN" <jtaqueba mnl-hub dhl com>]

Something is wrong when I do the 'top' command.   It only
show me the following screen:

  7:13pm  up 38 days, 20:23,  1 user,  load average: 2.00, 2.01, 2.00
76 processes: 72 sleeping, 4 running, 0 zombie, 0 stopped
CPU states: 72.4% user, 27.5% system,  0.0% nice,  0.2% idle
Mem:  127776K av, 125408K used,   2368K free,  47776K shrd,  43080K buff
Swap: 256968K av,      0K used, 256968K free                 20960K cached
 
  PID USER     PRI  NI  SIZE  RSS SHARE STAT  LIB %CPU %MEM   TIME COMMAND
>>>
 

I can't see the processes below the arrow line.  what's wrong?
I have Redhat 5.2 with me

Joel