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 2.6.15 #1 PREEMPT Tue Jan 3 23:29:37 EET 2006 i686 unknown unknown GNU/Linux
 
Gnu C                  3.3.4
Gnu make               3.80
binutils               2.15.92.0.2
util-linux             2.12p
mount                  2.12p
module-init-tools      3.1
e2fsprogs              1.35
jfsutils               1.1.10
reiserfsprogs          3.6.18
reiser4progs           line
xfsprogs               2.6.13
quota-tools            3.12.
nfs-utils              1.0.7
Linux C Library        2.3.4
Dynamic linker (ldd)   2.3.4
Linux C++ Library      5.0.6
Procps                 3.2.3
Net-tools              1.60
Kbd                    1.12
Sh-utils               5.2.1
Modules Loaded