Intel-based Macs: "Don't Steal Mac OS" .kext file present on shipping machines
Mac OS X 10.3.6 (#14): Audio kext workaround successful for a number of readers
Troubleshooting Mac OS X 10.2.4: Dial-up problems and old .kext files
The latest round of Apple EFI firmware updates tackles Thunderbolt, sleep, and Wi-Fi issues.
Microtech card reader drivers: a follow-up
Adaptec drivers: sleep yes; wake no
Odds & Ends: DSL/PPPoE FAQ; More on quitting the Dock; Invalid kernel extensions?
Users may find that kernel panics can occur when running system utilities like Time Machine when other programs are installed and causing issues.
AppleSCCSerial.kext file update (for dual processor G4s)
Troubleshooting the PowerBook G4 17" 1.33 GHz: USB drop-off