dmesg-good is dmesg after boot of 2.6.12-rc2-mm3 (no PCI or aCPI debugging)
dmesg-working is dmesg after boot of 2.6.12-rc2-mm3 (PCI and ACPI debugging on)
dmesg-broken is dmesg after boot of 2.6.17-rc2 (PCI and ACPI debugging on)
dmesg-extra-* are dmesg after boot of 2.6.17-rc2 with extra debugging printks
  in the PCI subsystem

For all other files, -working is from 2.6.12-rc2-mm3, -broken is from
2.6.17-rc2.