If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux tungsten 2.6.20.6 #2 SMP Wed Apr 11 20:30:12 BST 2007 i686 Intel(R) Xeon(R) CPU            3050  @ 2.13GHz GenuineIntel GNU/Linux
 
Gnu C                  4.1.1
Gnu make               3.80
binutils               2.16.1
util-linux             2.12r
mount                  2.12r
module-init-tools      3.2.1
e2fsprogs              1.38
Linux C Library        > libc.2.4
Dynamic linker (ldd)   2.4
Procps                 3.2.6
Net-tools              1.60
Kbd                    1.12
Sh-utils               6.7
udev                   087
Modules Loaded