KVM on core 2 duo laptop Ubuntu / Failed :(

After successfull usage of KVM on my CentOS desktop,
started installation of kvm on Ubuntu (Xubuntu 8.04) on my Core2 duo laptop:

$ sudo apt-get install kvm
..
 * Your system does not have the CPU extensions 
required to use KVM. Not doing anything. 
# check for presence of vitualization in cpu
$ cat  /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 Duo CPU     T5470  @ 1.60GHz
stepping        : 13
cpu MHz         : 800.000
cache size      : 2048 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
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 pbe nx lm 
constant_tsc arch_perfmon pebs bts pni monitor ds_cpl est tm2 ssse3 cx16 
xtpr lahf_lm ida
bogomips        : 3195.76
clflush size    : 64

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 Duo CPU     T5470  @ 1.60GHz
stepping        : 13
cpu MHz         : 800.000
cache size      : 2048 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
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 
pbe nx lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl est 
tm2 ssse3 cx16 xtpr lahf_lm ida
bogomips        : 3191.86
clflush size    : 64
#is virtualization in flags?
$ egrep 'vmx|svm' /proc/cpuinfo 
$ 

Ups, failed :(

It was because KVM works only with specific processors.

To conclude: Different CPU model have different best virtual machine.

That way further I'll try Xen there
(which failed on my CentOS desktop due to lack of rtl8168/8111 drivers from the box;
It seems that if they will be installed, there is high probability of lacking
the driver after the updates of the xen kernel package).