Mac OS 10.5.7 Update: Caution- Latest MacBook nano drivers must be installed before upgrading.
QuickTime 7.6.x: Incompatible- Stay at QuickTime 7.5.x as a bug in 7.6.x will dissable your video camera in iChat.
Mac OS 10.5.8 Update: Caution-Not Fully Compatible yet!- Not recommended until updated Wind Driver Pack is available.