If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux obelix 2.6.13.4 #2 SMP Wed Oct 26 16:14:12 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux
 
Gnu C                  3.3.5
Gnu make               3.80
binutils               2.15.94.0.2.2
util-linux             2.12q
mount                  2.12q
module-init-tools      3.2-pre1
e2fsprogs              1.36
jfsutils               1.1.7
reiserfsprogs          3.6.18
reiser4progs           1.0.3
xfsprogs               2.6.25
PPP                    2.4.3
isdn4k-utils           3.7
nfs-utils              1.0.7
Linux C Library        x  1 root root 1446783 Jun 11 01:09 /lib64/tls/libc.so.6
Dynamic linker (ldd)   2.3.4
Linux C++ Library      5.0.7
Procps                 3.2.5
Net-tools              1.60
Kbd                    1.12
Sh-utils               5.3.0
udev                   053
Modules Loaded         ipt_pkttype ipt_TCPMSS ipt_LOG ipt_limit floppy usbserial parport_pc lp parport thermal fan button battery ac cpufreq_userspace speedstep_centrino processor hisax crc_ccitt isdn slhc ipt_state ipt_REJECT iptable_mangle iptable_filter ip6table_mangle ip_nat_ftp iptable_nat ip_conntrack_ftp ip_conntrack ip6table_filter ip6_tables ipv6 edd evdev joydev st sr_mod sg nls_iso8859_1 nls_cp437 vfat fat md_mod dm_mod reiserfs ata_piix ahci ip_tables usblp uhci_hcd usbcore sk98lin sym53c8xx scsi_transport_spi sata_sil libata sd_mod scsi_mod