[arch-general] only detect 1 cpu

[viodreamlistas at gmail.com]

Hi all!

I have got a quad core procesor but my archlinux only detect 1 cpu. 
---
$ uname -a
Linux Nemesis 2.6.31-ARCH #1 SMP PREEMPT Fri Oct 23 10:03:24 CEST 2009 x86_64 Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz GenuineIntel GNU/Linux
---
$ cat /proc/cpuinfo
cpu family	: 6
model		  : 15
model name	  : Intel(R) Core(TM)2 Quad CPU    Q6600  @ 2.40GHz
cpu cores	  : 1
....
---

I dont know how to do to detect the 4 cpus. Any sugestions?
Thanks in advance!

PD: Sorry for mi english.

-- 
V!ODREAM