I don't have traces at hand and due to lack of time cannot reproduce it up to tomorrow. However this hint may speed up your analysis!
usb_endpoint usbdev2.2_ep81: PM: suspend 0->2, parent 2-1:1.0 already 2
usb_device usbdev1.1: PM: suspend 0->2, parent usb1 already 2
usb_endpoint usbdev1.1_ep81: PM: suspend 0->2, parent 1-0:1.0 already 2
hub 1-0:1.0: PM: suspend 2->2, parent usb1 already 2
usb_endpoint usbdev1.1_ep00: PM: suspend 0->2, parent usb1 already 2
eth2: Airport entering sleep mode
eth0: suspending, WakeOnLan disabled
pci_set_power_state(): 0002:20:0e.0: state=3, current state=5
firewire_ohci: pci_set_power_state failed with -22<3>pci_device_suspend(): pci_suspend+0x0/0x9c [firewire_ohci]() returns -22
suspend_device(): pci_device_suspend+0x0/0x98() returns -22
Could not suspend device 0002:20:0e.0: error -22
eth0: resuming
PHY ID: 4061e4, addr: 0
eth2: Airport waking up
eth2: New link status: Connected (0001)
hda: Enabling Ultra DMA 2
eth0: Link is up at 100 Mbps, full-duplex.
eth0: Pause is disabled
ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
hdb: Enabling Ultra DMA 2
usb_endpoint usbdev1.1_ep00: PM: resume from 0, parent usb1 still 2
usb_endpoint usbdev1.1_ep81: PM: resume from 0, parent 1-0:1.0 still 2
usb_device usbdev1.1: PM: resume from 0, parent usb1 still 2
Driver sleep failed
Sleep rejected by devices
adb: starting probe task...
adb devices: [2]: 2 c4 [3]: 3 1 [7]: 7 1f
ADB keyboard at 2, handler 1
ADB mouse at 3, handler set to 4 (trackpad)
adb: finished probe task...
usb_device usbdev1.1: PM: suspend 0->2, parent usb1 already 2
usb_endpoint usbdev1.1_ep81: PM: suspend 0->2, parent 1-0:1.0 already 2
hub 1-0:1.0: PM: suspend 2->2, parent usb1 already 2
usb_endpoint usbdev1.1_ep00: PM: suspend 0->2, parent usb1 already 2
eth2: Airport entering sleep mode
eth0: suspending, WakeOnLan disabled
Trying to free already-free IRQ 40
pci_set_power_state(): 0002:20:0e.0: state=3, current state=5
firewire_ohci: pci_set_power_state failed with -22<3>pci_device_suspend(): pci_suspend+0x0/0x9c [firewire_ohci]() returns -22
suspend_device(): pci_device_suspend+0x0/0x98() returns -22
Could not suspend device 0002:20:0e.0: error -22
eth0: resuming
PHY ID: 4061e4, addr: 0
eth2: Airport waking up
eth2: New link status: Connected (0001)
hda: Enabling Ultra DMA 2
hdb: Enabling Ultra DMA 2
eth0: Link is up at 100 Mbps, full-duplex.
eth0: Pause is disabled
Linux kismet 2.6.22-1-powerpc #1 Sun Jul 29 13:58:06 CEST 2007 ppc GNU/Linux
linux-image-2.6.22-1-powerpc_2.6.22-3_powerpc.deb