10.6.X "Snow Leopard"

10.6.0

Retail DVD

10.6.1

Combo Update 10.6.1

10.6.2

Combo Update 10.6.2

10.6.3

Retail DVD or Combo Update 10.6.3v1.1

10.6.4

Combo Update 10.6.4

10.6.5

Combo Update 10.6.5

Atheros Wifi

(Sebinouse)
We need a new legacy kext (see AtherosFix.kext from netkas.org). This new kext is compatible with all the previous versions.

10.6.6

Combo Update 10.6.6

10.6.7

Combo Update 10.6.7

10.6.8

Combo Update 10.6.8

Atheros Wifi

(Sebinouse)
This update slowed down my system and broke atheros wifi support.
I had to restore /System/Library/SystemConfiguration/Apple80211Monitor.bundle from 10.6.7
Edit : we need a proper SMBIOS.plist to keep 10.6.8 Vanilla (Source, Property and list )

<key>SMboardproduct</key>
  <string>Mac-F4208CC8</string>

C-State

(Sebinouse)
No more C-States for me … looking for a solution …
(Anastasius)
For C-States to work on 10.6.8 I replaced /System/Library/Extensions/IOPlatformPluginFamily.kext with the one from 10.6.7
(Neodymium)
10.6.8 Update - No CPU PM - Wireless works fine - no Bluetooth (even after I rolled back to 10.6.7, Bluetooth is not working)
Slow
I updated to 10.6.8 using combo update, rebooted, no Trackpoint or Keyboard - logged into safe mode - dropped Extra folder from 10.6.7 installation into root, got trackpoint and keyboard back. Didnt check Voodoo…I will check tomorrow.