1- Jmicron IDE controllers are known to have issues with OS X.
2- Some 965 chipset MSI and ASUS motherboards (desktop and laptop) have issues with this OS. ACPI errors while booting with DVD and also with hd. You can face panics with multicore cpu's on some uncompatible mobo also.
3- This dvd may not include all the necessary drivers required by your setup. Additional steps may be needed to be taken by the user to setup and use such components.
4- Be sure that the labels of your hfs+ partitions are not similar. ie. Mac 1, MacOS or Leopard X, Leopard Y. Installer may fail to determine the target partition to install the system if the labels match.
Unsuccessful Installation and Related Symptoms :
1- I get the error "com.apple.Boot.plist is not found" while booting the DVD
—> You are probably trying to boot from an unsupported controller.
~ You should use usb dvd rom drive, or you may need sata-ide convertor for your dvd rom drive (jmicron).
2- System freezes at grey screen by booting the DVD.
—> You probably have an unsupported chipset.
*965 chipset ASUS or MSI motherboard/laptop
*many VIA, SIS, ATI chipset motherboards
~ Change your hardware
~ A patch can be possible for 965 ASUS/MSI hardware, so keep on watching this community.