CPU info - not right

For some reason top stopped to show me 4 CPUs. It shows one now.

This is Dual Xeon 2.4 Ghz Server.

Code: 
root@labnix1 [~]# cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Intel(R) Xeon(TM) CPU 2.40GHz
stepping        : 5
cpu MHz         : 2400.141
cache size      : 512 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic 
sep mtrr pge mca cmov pat pse36 clflush dts acpi 
mmx fxsr sse sse2 ss ht tm
bogomips        : 4784.12
Chrootkit shows nothing infected. Can anyone help me to fix this?

 

 

 

 

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