Top only displays 1 CPU

[McDougall, Marshall (FSH)]

Recently I started to install some new Intel servers(both blade and 2U)
using RHEL4U4.  When I run top, I only get a single line displayed for
CPU.  With all my version 3 (2.4) boxes I get however many cpu's that
are reported at startup.  I cannot find any reference to the change of
top's behavior.  Can anyone point me to a doc or explain the new
display?  Is there a way to see what my individual CPU's are actually
doing?  Thanks.

Regards, Marshall