Hi,

On an Intel Pentium 200 machine:

~ $ dmesg | grep F0
Intel Pentium with F0 0F bug - workaround enabled.
~ $ cat /prc/cpuinfo
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 5
model		: 2
model name	: Pentium 75 - 200
stepping	: 12
cpu MHz		: 205.231
cache size	: 0 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 1
wp		: yes
flags		: fpu vme de pse tsc msr mce cx8
bogomips	: 411.10
clflush size	: 32
~ $

On 2.4 kernels it showed it correctly.

I also attach my .config

  $ ./ver_linux
If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.

Linux hierro 2.6.24 #5 Thu Jan 31 14:24:21 CET 2008 i586 GNU/Linux

Gnu C                  4.2.3
Gnu make               3.81
binutils               2.18.0.20080103
util-linux             2.13.1
mount                  2.13.1
module-init-tools      implemented
e2fsprogs              1.40.8
quota-tools            3.16.
Linux C Library        2.7
Dynamic linker (ldd)   2.7
Procps                 3.2.7
Net-tools              1.60
Console-tools          0.2.3
Sh-utils               6.10

Cheers,

David.