[ale] lost a cpu core

[lists at serioustechnology.com (Geoffrey)]

Upgraded my macbook pro to 64 bit RHEL, and now I only see one cpu core 
on my: Intel(R) Core(TM)2 Duo CPU

This is confirmed via gkrellm, top and /proc/cpuinfo

If I boot off my Mandriva rescue disk, /proc/cpuinfo shows both cores.

Confirmed I'm running smp kernel:

Linux mac.serioustechnology.com 2.6.18-186.el5 #1 SMP Wed Jan 27 
18:11:22 EST 2010 x86_64 x86_64 x86_64 GNU/Linux

Anyone have any suggestions?

-- 
Until later, Geoffrey

"I predict future happiness for America if they can prevent
the government from wasting the labors of the people under
the pretense of taking care of them."
- Thomas Jefferson