Pls see below

I installed Voodoo 10.5.5 as I read someplace that if you have AMD , you need to have 10.5.5 but (in one of the many installations) I still saw the lagging and choppiness you mentioned.
Did not try to remove the file AppleUpstreamxxxxx something or other mentioned in this thread. I'll tried that later.

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I have the following system and have been experimenting - not a lot of success
MB: ASUS M2NBP-VM CSM
CPU AMD 64X2 5000+
Graphics: Nvidia 8400 GS
SATA drive - Have a "version" of Leopard (10.5.2 -> 10.5.4 -> 10.5.5)
PATA drive - This is the drive I am trying to install the 10.5.6
4 GB 800 MHz RAM
PS2 Keyboard (wireless) and Mouse
Audio - Built in (AppleAzalia works well
Eth: Internal (nForceEthernetdriver works reasonably well) - Nvidia nForce 430B Gigabit
External - Ethernet-to-USB - works pretty well

Loaded base + chipset formy sata (detects it) + NVIDIA + PS2 fix + nForce + appl.
voodoo kernel + seabelt (i read AM==> voodoo + seabelt somewhere).
Mouse very slow and erratic. <=== LAGGING and CHOPPY

Loaded base +chipset+ keyboard fix => Unable to detect KB and Mouse

I also have te problem of booting of the DVD, but I solved it by installing from the existing 10.5.5

Any way any suggestions greatly appreciated