If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux dragon 2.6.39-ARCH #1 SMP PREEMPT Mon Jun 6 22:37:55 CEST 2011 x86_64 Intel(R) Core(TM) i5 CPU M 560 @ 2.67GHz GenuineIntel GNU/Linux
 
Gnu C                  4.6.0
Gnu make               3.82
binutils               2.21.0.20110430
util-linux             2.19.1
mount                  support
module-init-tools      3.13
e2fsprogs              1.41.14
jfsutils               1.1.15
reiserfsprogs          3.6.21
xfsprogs               3.1.5
pcmciautils            017
PPP                    2.4.5
Linux C Library        2.13
Dynamic linker (ldd)   2.13
Linux C++ Library      6.0.16
Procps                 3.2.8
Net-tools              1.60
Kbd                    1.15.3
Sh-utils               8.12
wireless-tools         29
Modules Loaded         ipv6 uvcvideo videodev usb_storage uas media v4l2_compat_ioctl32 btusb bluetooth snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_intel sg e1000e snd_hda_codec arc4 snd_hwdep snd_pcm vboxnetadp vboxnetflt vboxdrv serio_raw snd_timer psmouse ecb snd_page_alloc cpufreq_ondemand i915 drm_kms_helper iwlagn drm ehci_hcd firewire_ohci i2c_algo_bit tpm_tis iTCO_wdt i2c_i801 mac80211 cfg80211 sdhci_pci sdhci msr intel_agp iTCO_vendor_support mmc_core intel_ips intel_gtt usbcore evdev acpi_cpufreq freq_table firewire_core tpm pcspkr i2c_core tpm_bios processor thermal video crc_itu_t wmi battery ac mperf button thinkpad_acpi rfkill snd soundcore nvram ext4 mbcache jbd2 crc16 sr_mod cdrom sd_mod ahci libahci libata scsi_mod