If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux krichy.tvnetwork.hu 2.6.26 #27 SMP PREEMPT Tue Oct 14 15:19:30 CEST 2008 i686 GNU/Linux
 
Gnu C                  4.2.4
Gnu make               3.81
binutils               2.18.0.20080103
util-linux             2.13.1.1
mount                  2.13.1.1
module-init-tools      3.3-pre2
e2fsprogs              1.41.0
reiserfsprogs          3.6.19
quota-tools            3.16.
PPP                    2.4.4
Linux C Library        2.7
Dynamic linker (ldd)   2.7
Procps                 3.2.7
Net-tools              1.60
Console-tools          0.2.3
Sh-utils               6.10
udev                   125
Modules Loaded         fglrx brd minix binfmt_misc ext2 nls_iso8859_1 nls_cp437 vfat fat isofs nls_base ppp_deflate ppp_async ppp_generic slhc crc_ccitt xt_state iptable_filter ip_tables xt_tcpudp x_tables nf_conntrack_ipv4 nf_conntrack usb_storage ehci_hcd snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore uhci_hcd 8250_pnp thermal snd_page_alloc usbcore button e1000e i2c_i801 processor thermal_sys 8250 serial_core