HI, I've been trying to install my machine for 2 weeks with no luck.
I tried iatkos V7, iDeneb v1.4, 1.6 with different options. The most lucky config was with iatkos.

My machine specs :
Tyan MB 2927 with 2 socket opteron 1207 (MCP55 from nvidia)
Proc : 2 x 2218 opterons
Ram : 16Gb
Disks : 4x SATA (2x500gb 2x 1.5Tb)
Graphic card: Nvidia 9600 GT.

Boot from iAKTOS disk needs a -x on command line else I got a spinning wheel
on screen and nothing else.
With -x the install screen comes up.
Everything went smooth at install until reboot.
At reboot, the OS loads, gets gray screen and then nothing. The mouse cursor is there and nothing happens.
I looked then at the /var/log/system.log and see that the system tried to start the writeconfig process and then the setup assistant.

Both crash, then it tries to restart them, they crash, and so on....
I looked at the crash reports :

writeconfig crash :
Type: EXC_BREAKPOINT (SIGTRAP)
Setup Assistant :
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000000bfffdffc

I need some help please.
PS: I installed the iATKOS V7 on similar hardware with success (was SUN U20M2 mono-socket).

I found myself the problem. Note good that if you got a gray screen, use "cpus=1" to launch the setup assistant.
However, I have another issue, that is the OS does not boot unless I boot with -x which leaves a lot of drivers/extensions not loaded.
Network for instance. I need to kextload the nforcelan before being able to talk with others.
I'm quite certain that some driver are broking the boot. How can I know which drivers are loaded or not. kextstat seems to list that, but, I have not really big differences between a kextstat after booting with -x than a boot without.

Wheres the Problem at normal boot?

Maybe Verbosemode or system.log gives a clue?

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Well, OS X starts, I get blue screen, and then nothing. No gray screen, no mouse cursor.
Verbose is ok.
I need to check the log file indeed (that's a good idea).
Safe boot is not really nice to use. Software update hangs in middle check, no network, and so on.

Have you installed any String or Enabler for your GeForce?

You can load Extensions manualy from within Safemode using kextload command.

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I know about kextload.
It's the only way to get some network.
My main problems for this installation are :
- no lspci working - System profiler cannot list the PCI devices
- no QE support
- installer is not working. I get the first window then the spinning wheel and nothing more.
- and most of it the inability to identify the right extention that hangs the system when booting without -x