If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux italy 2.6.26-1-686 #1 SMP Sat Jan 10 18:29:31 UTC 2009 i686 GNU/Linux
 
Gnu C                  4.3.3-3)
Gnu make               3.81
binutils               Binutils
util-linux             2.13.1.1
mount                  2.13.1.1
module-init-tools      3.4
e2fsprogs              1.41.3
PPP                    2.4.4
Linux C Library        > libc.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
wireless-tools         29
Modules Loaded         nls_utf8 isofs zlib_inflate udf nls_base crc_itu_t xt_multiport iptable_filter ip_tables x_tables binfmt_misc ppdev lp ipv6 radeon drm loop snd_bt87x snd_ens1371 gameport snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm parport_pc parport serio_raw psmouse via_ircc irda snd_seq_dummy crc_ccitt i2c_viapro pcspkr tuner_simple tuner_types snd_seq_oss snd_seq_midi snd_rawmidi tuner snd_seq_midi_event snd_seq tvaudio button snd_timer snd_seq_device snd bttv videodev v4l1_compat firmware_class ir_common compat_ioctl32 soundcore i2c_algo_bit snd_page_alloc v4l2_common videobuf_dma_sg videobuf_core btcx_risc tveeprom i2c_core shpchp pci_hotplug via_agp agpgart evdev ext3 jbd mbcache sha256_generic aes_i586 aes_generic cbc sd_mod usb_storage dm_crypt crypto_blkcipher dm_mirror dm_log dm_snapshot dm_mod ide_cd_mod cdrom ide_disk ata_generic libata scsi_mod dock via82cxxx ide_pci_generic ide_core uhci_hcd ehci_hcd ohci_hcd usbcore 8139too 8139cp mii thermal processor fan thermal_sys