If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux haptop 2.6.11-gentoo-r6 #7 Sat May 7 18:07:07 CEST 2005 i686 Mobile Intel(R) Celeron(R) CPU 1.60GHz GenuineIntel GNU/Linux
 
Gnu C                  3.3.5-20050130
Gnu make               3.80
binutils               2.15.92.0.2
util-linux             2.12i
mount                  2.12i
module-init-tools      3.0
e2fsprogs              1.35
reiserfsprogs          3.6.19
reiser4progs           line
PPP                    2.4.2
Linux C Library        2.3.4
Dynamic linker (ldd)   2.3.4
Procps                 3.2.4
Net-tools              1.60
Kbd                    1.12
Sh-utils               5.2.1
udev                   045
Modules Loaded         usb_storage radeon ohci_hcd e100 orinoco_pci orinoco hermes yenta_socket rsrc_nonstatic pcmcia_core radeonfb i2c_algo_bit snd_intel8x0m i2c_i801 i2c_core snd_pcm_oss snd_mixer_oss snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_intel8x0 snd_ac97_codec snd_pcm snd_timer snd soundcore snd_page_alloc ehci_hcd uhci_hcd intel_agp rtc