Board assembles pretty easily, even with less than detailed instructions. Installation was complicated by a failure of the boot floppies to recognize the NIC, although DSL and Knoppix 4 seemed to have no problem. I found it necessary to drop in a cheap PCI NIC for the installation.

Haven't tried the ndvia drivers, yet, although others have found them useful in solving this problem.

All of the mother board devices were supported. I am giving an 8 because the line-in has too much noise. The noise floor is about -70db. I added a SB card which has a noise floor of about -95db.

00:00.0 Host bridge: nVidia Corporation nForce3 250Gb Host Bridge (rev a1)
00:01.0 ISA bridge: nVidia Corporation nForce3 250Gb LPC Bridge (rev a2)
00:01.1 SMBus: nVidia Corporation nForce 250Gb PCI System Management (rev a1)
00:02.0 USB Controller: nVidia Corporation CK8S USB Controller (rev a1)
00:02.1 USB Controller: nVidia Corporation CK8S USB Controller (rev a1)
00:02.2 USB Controller: nVidia Corporation nForce3 EHCI USB 2.0 Controller (rev a2)
00:05.0 Bridge: nVidia Corporation CK8S Ethernet Controller (rev a2)
00:06.0 Multimedia audio controller: nVidia Corporation nForce3 250Gb AC'97 Audio Controller (rev a1)
00:08.0 IDE interface: nVidia Corporation CK8S Parallel ATA Controller (v2.5) (rev a2)
00:0b.0 PCI bridge: nVidia Corporation nForce3 250Gb AGP Host to PCI Bridge (rev a2)
00:0e.0 PCI bridge: nVidia Corporation nForce3 250Gb PCI-to-PCI Bridge (rev a2)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:00.0 VGA compatible controller: nVidia Corporation NV18 [GeForce4 MX 4000 AGP 8x] (rev c1)
02:07.0 Multimedia audio controller: Ensoniq ES1371 [AudioPCI-97] (rev 09)
02:08.0 Serial controller: Siig Inc CyberSerial (2-port) 16650
02:09.0 FireWire (IEEE 1394): Agere Systems FW323 (rev 04)
02:0a.0 Multimedia video controller: Internext Compression Inc iTVC16 (CX23416) MPEG-2 Encoder (rev 01)

Yes. Knoppix 4.0.2 recognized both of my AMD Opeteron cpus, 2 gig of ram, ethernet card, on-board sound and graphics, etc. Likewise, when I re-installed SuSE, the correct kernel was installed.

The only thing I had to do to get surround sound and 3d graphics working was to download and install the nvidia driver from the nvidia website. Before the driver install, I had stereo sound and 2d graphics. After the driver install, I had surround sound and 3d graphics.

AGP with ATI cards works extremely unreliable - only sometimes detected.You have to boot windows and then reboot to Linux to get it to work.Seems to be an BIOS issue.

Cheap, rock solid stable board. AMD socket 754, and AGP are getting a bit dated, and the K8N has been discontinued.
If you want a cheap linux rig though, pair it up with a sempron cpu and a nvidia gfx card and you're good to go.