If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux localhost.localdomain 2.6.18-194.17.1.el5 #1 SMP Wed Sep 29 12:50:31 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
 
Gnu C                  4.1.2
Gnu make               3.81
binutils               2.17.50.0.6
util-linux             2.13-pre7
mount                  2.13-pre7
module-init-tools      found
quota-tools            3.13.
Linux C Library        2.5
Dynamic linker (ldd)   2.5
Procps                 3.2.7
Kbd                    1.12
Sh-utils               5.97
udev                   095
Modules Loaded         autofs4 hidp nfs fscache nfs_acl rfcomm l2cap bluetooth lockd sunrpc vmblock vsock vmci vmmemctl vmhgfs acpiphp loop dm_multipath scsi_dh video backlight sbs power_meter hwmon i2c_ec dell_wmi wmi button battery asus_acpi acpi_memhotplug ac ipv6 xfrm_nalgo crypto_api lp sg snd_ens1371 gameport snd_rawmidi snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq floppy snd_seq_device snd_pcm_oss pcspkr snd_mixer_oss snd_pcm i2c_piix4 snd_timer i2c_core snd soundcore e1000 snd_page_alloc serio_raw shpchp parport_pc parport ide_cd cdrom dm_raid45 dm_message dm_region_hash dm_mem_cache dm_snapshot dm_zero dm_mirror dm_log dm_mod ata_piix libata mptspi mptscsih mptbase scsi_transport_spi sd_mod scsi_mod ext3 jbd uhci_hcd ohci_hcd ehci_hcd