If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux grinch 2.5.72-mm2 #3 Sat Jun 21 21:31:14 EEST 2003 i686 unknown
 
Gnu C                  3.3
Gnu make               3.80
util-linux             2.11u
mount                  2.11u
module-init-tools      2.4.21
e2fsprogs              1.32
jfsutils               1.1.2
reiserfsprogs          3.x.1b
xfsprogs               2.0.3
Dynamic linker (ldd)   2.2.4
Procps                 3.1.8
Net-tools              1.60
Kbd                    1.08
Sh-utils               2.0
Modules Loaded