Just got the 10.5.1 release to be stable yesterday, but just couldn't hold back from installing 10.5.2. Don't know if this was right, but I installed this directly over 10.5.1 w/ no formatting / erasing of the partition. It booted right up, no problem. Bootloader used "EasyBCD" - Very simple to setup. All previous settings still in place and all devices (except sound) working. Heck this update even fixed the cursor video distortion from 10.5.1 which I experienced. Thank you and nice work Zephyroth.

My system: If it helps -

OS: MacOSX Leopard 10.5.2 (Zephyroth)
CPU: AMD Opteron 1212 - 2GHZ
Mainboard: Gigabyte GA-M61P-S3 / NVIDIA® GeForce 6100 / nForce 430 chipset
Mem : 3 GB DDR
Graphics : ATI 128mb Radeon x300
Audio : Realtek ALC883 Audio Codec
Ethernet : Realtek 8139
Hard drives: IDE w/ Vista - SATA w/ Leopard
DVD : Atapi