Well, for me this final release is a backstep...
I returned to RC that is great for me (and my Pc).
I installed the kernel and kexts with pkg inside the dmg.
At the restart hanged for a long time about 3 min... (36 secs with RC release) then was default at 32bit (i know i can change it,but all was perfectly working for me at 64bit) and then i had a KernelPanic (the first i could see from all voodoo's releases).
Restart, all ok, then another KP with Safari (the other one was in system pref. panel).
So, restart and hanging forever searching for an IOKIT... DEAD.
Restart in windows, restored RC Kernel, changed apple.Boot.plist to default with TransMac and all was great again.
I'll wait next release... thanks anyway.

Snow Leopard Client-Server 10.6.5 by Hazard
10.6.5 legacy kernel for INTEL/AMD V2 Kernel
Cpu: AMD Phenom X4 965
Motherboard: Asus M4A78 pro AMD 780G / AMD SB700 chipset
Ram: 6 gb @ 800 Mhz
Gpu: nVidia 8800gts 512 pci-xpress - Audio integrated: VIA VT1708S
AHCI mode HDs