sh scripts/ver_linux:

If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux dsl-hkigw4j21.dial.inet.fi 2.6.1 #3 Sat Jan 17 22:44:29 EET 2004 i686 GNU/Linux
 
Gnu C                  3.3.3
Gnu make               3.80
util-linux             2.12
mount                  2.12
module-init-tools      3.0-pre5
e2fsprogs              1.35-WIP
jfsutils               1.1.4
xfsprogs               2.6.0
quota-tools            3.10.
nfs-utils              1.0.6
Linux C Library        2.3.2
Dynamic linker (ldd)   2.3.2
Procps                 3.1.15
Net-tools              1.60
Console-tools          0.2.3
Sh-utils               5.0.91

/proc/version:

Linux version 2.6.1 (petri@dsl-hkigw4j21.dial.inet.fi) (gcc version 
3.3.3 20040110 (prerelease) (Debian)) #3 Sat Jan 17 22:44:29 EET 2004

/proc/cpuinfo:

processor	: 0
vendor_id	: AuthenticAMD
cpu family	: 6
model		: 8
model name	: AMD Athlon(TM) XP 1700+
stepping	: 0
cpu MHz		: 1469.109
cache size	: 256 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 1
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow
bogomips	: 2891.77

/proc/ioports:

0000-001f : dma1
0020-0021 : pic1
0040-005f : timer
0060-006f : keyboard
0070-0077 : rtc
0080-008f : dma page reg
00a0-00a1 : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
0330-0331 : MPU401 UART
0376-0376 : ide1
0388-0389 : OPL2/3 (left)
038a-038b : OPL2/3 (right)
03c0-03df : vga+
03f6-03f6 : ide0
0cf8-0cff : PCI conf1
a800-a81f : 0000:00:11.3
  a800-a81f : uhci_hcd
b000-b01f : 0000:00:11.2
  b000-b01f : uhci_hcd
b400-b40f : 0000:00:11.1
  b400-b407 : ide0
  b408-b40f : ide1
b800-b83f : 0000:00:0f.0
  b800-b83f : 0000:00:0f.0
d000-d01f : 0000:00:09.1
  d000-d01f : uhci_hcd
d400-d41f : 0000:00:09.0
  d400-d41f : uhci_hcd
d800-d8ff : 0000:00:05.0
  d800-d8ff : CMI8738-MC6

/proc/iomem:

00000000-0009fbff : System RAM
0009fc00-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000f0000-000fffff : System ROM
00100000-0fffbfff : System RAM
  00100000-003dfb54 : Kernel code
  003dfb55-004ae8ff : Kernel data
0fffc000-0fffefff : ACPI Tables
0ffff000-0fffffff : ACPI Non-volatile Storage
f4000000-f40000ff : 0000:00:09.2
  f4000000-f40000ff : ehci_hcd
f4800000-f5dfffff : PCI Bus #01
  f4800000-f4ffffff : 0000:01:00.0
  f5000000-f5003fff : 0000:01:00.0
f5f00000-f7ffffff : PCI Bus #01
  f6000000-f7ffffff : 0000:01:00.0
f8000000-fbffffff : 0000:00:00.0
fec00000-fec00fff : reserved
fee00000-fee00fff : reserved
ffff0000-ffffffff : reserved

lspci -vvv:

00:00.0 Host bridge: VIA Technologies, Inc. VT8366/A/7 [Apollo KT266/A/333]
	Subsystem: Asustek Computer, Inc. A7V333 Mainboard
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
	Latency: 0
	Region 0: Memory at f8000000 (32-bit, prefetchable) [size=64M]
	Capabilities: [a0] AGP version 2.0
		Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW- AGP3- Rate=x1,x2,x4
		Command: RQ=1 ArqSz=0 Cal=0 SBA+ AGP+ GART64- 64bit- FW- Rate=x1
	Capabilities: [c0] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:01.0 PCI bridge: VIA Technologies, Inc. VT8366/A/7 [Apollo KT266/A/333 AGP] (prog-if 00 [Normal decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
	Latency: 0
	Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
	I/O behind bridge: 0000e000-0000dfff
	Memory behind bridge: f4800000-f5dfffff
	Prefetchable memory behind bridge: f5f00000-f7ffffff
	BridgeCtl: Parity- SERR- NoISA- VGA+ MAbort- >Reset- FastB2B-
	Capabilities: [80] Power Management version 2
		Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:05.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10)
	Subsystem: Asustek Computer, Inc. CMI8738 6ch-MX
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 32 (500ns min, 6000ns max)
	Interrupt: pin A routed to IRQ 169
	Region 0: I/O ports at d800 [size=256]
	Capabilities: [c0] Power Management version 2
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:09.0 USB Controller: VIA Technologies, Inc. USB (rev 50) (prog-if 00 [UHCI])
	Subsystem: Asustek Computer, Inc.: Unknown device 8080
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 32, Cache Line Size: 0x08 (32 bytes)
	Interrupt: pin A routed to IRQ 185
	Region 4: I/O ports at d400 [size=32]
	Capabilities: [80] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:09.1 USB Controller: VIA Technologies, Inc. USB (rev 50) (prog-if 00 [UHCI])
	Subsystem: Asustek Computer, Inc.: Unknown device 8080
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 32, Cache Line Size: 0x08 (32 bytes)
	Interrupt: pin B routed to IRQ 193
	Region 4: I/O ports at d000 [size=32]
	Capabilities: [80] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:09.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 51) (prog-if 20 [EHCI])
	Subsystem: Asustek Computer, Inc.: Unknown device 8080
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 32, Cache Line Size: 0x10 (64 bytes)
	Interrupt: pin C routed to IRQ 169
	Region 0: Memory at f4000000 (32-bit, non-prefetchable) [size=256]
	Capabilities: [80] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0f.0 Ethernet controller: 3Com Corporation 3c905 100BaseTX [Boomerang]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 32 (750ns min, 2000ns max)
	Interrupt: pin A routed to IRQ 177
	Region 0: I/O ports at b800 [size=64]
	Expansion ROM at <unassigned> [disabled] [size=64K]

00:11.0 ISA bridge: VIA Technologies, Inc. VT8233A ISA Bridge
	Subsystem: Asustek Computer, Inc.: Unknown device 808c
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 0
	Capabilities: [c0] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT8233/A/C/VT8235 PIPC Bus Master IDE (rev 06) (prog-if 8a [Master SecP PriP])
	Subsystem: Asustek Computer, Inc. A7V8X motherboard
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 32
	Interrupt: pin A routed to IRQ 0
	Region 4: I/O ports at b400 [size=16]
	Capabilities: [c0] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:11.2 USB Controller: VIA Technologies, Inc. USB (rev 23) (prog-if 00 [UHCI])
	Subsystem: Asustek Computer, Inc. A7V8X motherboard
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 32, Cache Line Size: 0x08 (32 bytes)
	Interrupt: pin D routed to IRQ 201
	Region 4: I/O ports at b000 [size=32]
	Capabilities: [80] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:11.3 USB Controller: VIA Technologies, Inc. USB (rev 23) (prog-if 00 [UHCI])
	Subsystem: Asustek Computer, Inc. A7V8X motherboard
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 32, Cache Line Size: 0x08 (32 bytes)
	Interrupt: pin D routed to IRQ 201
	Region 4: I/O ports at a800 [size=32]
	Capabilities: [80] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-

01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP (rev 82) (prog-if 00 [VGA])
	Subsystem: Matrox Graphics, Inc. Millennium G450 32Mb SDRAM Dual Head
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 64 (4000ns min, 8000ns max), Cache Line Size: 0x08 (32 bytes)
	Interrupt: pin A routed to IRQ 193
	Region 0: Memory at f6000000 (32-bit, prefetchable) [size=32M]
	Region 1: Memory at f5000000 (32-bit, non-prefetchable) [size=16K]
	Region 2: Memory at f4800000 (32-bit, non-prefetchable) [size=8M]
	Expansion ROM at f5fe0000 [disabled] [size=128K]
	Capabilities: [dc] Power Management version 2
		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [f0] AGP version 2.0
		Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW- AGP3- Rate=x1,x2,x4
		Command: RQ=32 ArqSz=0 Cal=0 SBA+ AGP+ GART64- 64bit- FW- Rate=x1