If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux borjch.rnk 2.6.31-16-generic #53-Ubuntu SMP Tue Dec 8 04:01:29 UTC 2009 i686 GNU/Linux
 
Gnu C                  4.4.1
Gnu make               3.81
binutils               2.20
util-linux             2.16
mount                  support
module-init-tools      3.10
e2fsprogs              1.41.9
reiserfsprogs          3.6.21
xfsprogs               3.0.2
pcmciautils            014
Linux C Library        2.10.1
Dynamic linker (ldd)   2.10.1
Procps                 3.2.8
Net-tools              1.60
Kbd                    1.15
Sh-utils               7.4
wireless-tools         29
Modules Loaded         nls_iso8859_1 nls_cp437 vfat fat binfmt_misc ppdev lp parport vboxnetadp vboxnetflt vboxdrv nfsd exportfs nfs lockd nfs_acl auth_rpcgss sunrpc dm_crypt snd_hda_codec_realtek xt_tcpudp xt_mac nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm iptable_filter ip_tables x_tables snd_seq_dummy joydev snd_seq_oss snd_seq_midi snd_rawmidi ftdi_sio usbserial snd_seq_midi_event snd_seq snd_timer snd_seq_device psmouse serio_raw k8temp sc92031 asus_atk0110 shpchp snd i2c_piix4 soundcore snd_page_alloc dm_raid45 xor usb_storage usbhid radeon ttm drm i2c_algo_bit r8169 mii ati_agp agpgart ramzswap xvmalloc lzo_decompress lzo_compress