If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux sirius 2.6.10 #1 Fri Dec 10 21:23:42 UTC 2004 i686 AMD_Athlon(tm)_XP_processor_1600+ unknown PLD Linux
 
Gnu C                  3.3.5
Gnu make               3.80
binutils               2.15.94.0.1
util-linux             2.12
mount                  2.12
module-init-tools      3.0
e2fsprogs              1.35
reiserfsprogs          reiserfsck:
reiser4progs           fsck.reiser4:
xfsprogs               2.6.13
pcmcia-cs              3.2.8
PPP                    2.4.2
Linux C Library        2.3.3
Dynamic linker (ldd)   2.3.3
Linux C++ Library      5.0.7
Procps                 3.2.1
Net-tools              1.60
Kbd                    1.12
Sh-utils               5.2.1
Modules Loaded         vfat fat ipt_REJECT ipt_state nvidia floppy snd_pcm_oss snd_seq_oss snd_seq_midi_event snd_seq snd_mixer_oss snd_via82xx snd_mpu401_uart snd_emu10k1 snd_rawmidi snd_seq_device snd_ac97_codec snd_pcm snd_timer snd_page_alloc snd_util_mem snd_hwdep snd soundcore parport_pc lp parport gameport button i2c_sensor 8139too mii md5 ipv6 ipt_MASQUERADE iptable_nat iptable_filter ip_tables uhci_hcd ohci_hcd ehci_hcd usbcore xfs tuner bttv video_buf firmware_class i2c_algo_bit v4l2_common btcx_risc i2c_core videodev ip_conntrack_ftp ip_conntrack capability commoncap psmouse ide_cd cdrom ext3 mbcache jbd ide_disk via82cxxx ide_core