Mac OS X could not be installed on your computer

[silentmac]

Hello everybody.
I got some problems when I tried to install the 10.5.2 disk

In the beginning of the install I get the message:
Install Failed
Mac OS X could not be installed on your computer
The installer could not install the software because there was no software found to install.

Click restart to restart your computer and try again.
I can not figure out what's causing this error. The disc is fine, i verified the image and the burnt DVD.. I'm using high quality Verbatim DVD-R and burnt at 4X (slowest avalible).
My drives show up as 128GB but I figured that was a common problem that I could solve later..

I haven't had any problems with 10.4.5 10.4.6 or 10.4.8..

I have one GUID partition that I make using Disk utility on the disc.

Hardware:
AMD A64 3500+
DFI Infinity RS482 (SB 400 chipset)
Gigabyte X1600Pro SilentPipe II PCI-E card
2 GB PC3200 RAM
160GB Samsung ATA drive (for OS)
400GB Samsung ATA drive (for storage)
NEC Optiarc DVD±RW DL

I got every part of this setup to work in Tiger.

I'm really out of ideas, and would really need your help on this one...
Any thoughts?


TIA
/Chris