only one CPU working

[ram]

Hi all

I have Dual Xeon Server install with FC5,
Fedora Core release 5 (Bordeaux)

 and upgrade to latest

Linux nayer 2.6.20-1.2316.fc5 #1 SMP Fri Apr 27 19:19:10 EDT 2007 x86_64
x86_64 x86_64 GNU/Linux

but when i checking with intrupts i see only one CPU working
what is the cause of this problem.

more /proc/interrupts
           CPU0       CPU1       CPU2       CPU3
  0:    9503856          0          0          0   IO-APIC-edge      timer
  1:         62          0          0          0   IO-APIC-edge      i8042
  6:          3          0          0          0   IO-APIC-edge      floppy
  7:          0          0          0          0   IO-APIC-edge
parport0
  8:    9689942          0          0          0   IO-APIC-edge      rtc
  9:          1          0          0          0   IO-APIC-fasteoi   acpi
 12:        112          0          0          0   IO-APIC-edge      i8042
 16:    3128931          0          0          0   IO-APIC-fasteoi
uhci_hcd:usb1, uhci_hcd:usb5, eth0
 18:          0          0          0          0   IO-APIC-fasteoi
uhci_hcd:usb4
 19:          0          0          0          0   IO-APIC-fasteoi
uhci_hcd:usb2
 23:          0          0          0          0   IO-APIC-fasteoi
ehci_hcd:usb3
 25:     246456          0          0          0   IO-APIC-fasteoi   ioc0
 26:         46          0          0          0   IO-APIC-fasteoi   ioc1
 50:    6879019          0          0          0   IO-APIC-fasteoi   eth1
NMI:          0          0          0          0
LOC:    9502617    9502546    9502474    9502402
ERR:          0


other than CPU0, rest all 0

is this normal ?

any suggestions

ram
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