If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux foobar 2.6.24-rc2 #1 PREEMPT Fri Nov 9 00:24:41 CET 2007 ppc GNU/Linux
 
Gnu C                  4.1.3
Gnu make               3.81
binutils               2.18
util-linux             2.13
mount                  2.13
module-init-tools      3.3-pre2
e2fsprogs              1.40.2
reiserfsprogs          3.6.19
pcmciautils            014
PPP                    2.4.4
Linux C Library        2.6.1
Dynamic linker (ldd)   2.6.1
Procps                 3.2.7
Net-tools              1.60
Console-tools          0.2.3
Sh-utils               5.97
udev                   113
wireless-tools         29
Modules Loaded         nls_iso8859_15 cifs nls_base radeon drm snd_powermac snd_pcm snd_timer snd soundcore snd_page_alloc fuse firewire_ohci firewire_core crc_itu_t ide_cd cdrom ssb bcm43xx rng_core ieee80211softmac uninorth_agp ieee80211 ieee80211_crypt agpgart