For the last little while I've noticed that I get a whole hell of a lot of this in my dmesg log:
Code:
...
Matching service count = 0
Matching service count = 0
UHCI Root Hub Simulation: family specific matching fails
Apple Internal Keyboard / Trackpad: family specific matching fails
UHCI Root Hub Simulation: family specific matching fails
UHCI Root Hub Simulation: family specific matching fails
IR Receiver: family specific matching fails
UHCI Root Hub Simulation: family specific matching fails
IOUSBWirelessControllerDevice: family specific matching fails
EHCI Root Hub Simulation: family specific matching fails
Built-in iSight: family specific matching fails
Matching service count = 16
...
Plugging in more USB devices, like say a mouse or card reader, spawns more of this kind of thing. My USB devices seem to work fine, but I never do recall seeing this when I first got my MacBook Pro.
Could it perhaps be a 3rd-party kernel extension? I've got one or two installed for some esoteric USB devices I use at work.