Which motherboards are compatible?
There are packages built for the following motherboards. Note: The installation might work if you've got a similar motherboard.

Gigabyte EP45-UD3LR
Gigabyte EP45T-UD3LR
Gigabyte EP45-UD3R
Gigabyte EP45-UD3P
Gigabyte EX58-UD5
Gigabyte EX58A-UD7
Gigabyte EP45-UD3L
Gigabyte EP45-DS3L
Gigabyte P55M-UD2
MSI P55M-UD2

Nvidia 7xxx series gives a kernel panic after update (10.6.2)
There is a fix for this but it involves a fair bit of hacking. Since this graphics card is pretty old and limited I suggest getting a 9500GT if you want something cheap.

PS/2 Mouse and keyboard not working
This is pretty easy to solve. The reason I haven't added support to the installer is simply because PS/2 is antiquated. Most people use USB mice and keyboards.

My processor temperature has increased by 10 celsius degrees
This happens when NullCPUPowerManagement.kext is not installed. I've chosen not to include it because of compatibility issues with it and SleepEnabler.kext.

Sound is not working
Go to System Preferences -> Sound. Click "Output" and select Internal Speakers (for standard analog output)

I'm getting a boot0: error message
This happens when you have a partition that is 1TB or more. The only solution to this is repartitioning the harddrive (eg. 2x500GB).