I tried removing all usb devices except for mouse. It's clearly not fatal, I've had no problems - it happens with every kernel since FC3T2 (I never tried FC3T1)
Asus A7N8X deluxe
Nov 20 16:06:00 devel kernel: drivers/usb/input/hid-core.c: input irq status -71 received
Nov 20 16:06:33 devel kernel: drivers/usb/input/hid-core.c: input irq status -71 received
Nov 20 16:07:59 devel last message repeated 2 times
Nov 20 16:08:37 devel last message repeated 5 times
Nov 20 16:08:46 devel kernel: cdrom: This disc doesn't have any tracks I recognize!
Nov 20 16:08:51 devel kernel: drivers/usb/input/hid-core.c: input irq status -71 received
Nov 20 16:10:04 devel last message repeated 2 times
Nov 20 16:11:52 devel last message repeated 5 times
Nov 20 16:13:04 devel last message repeated 4 times
Nov 20 16:14:16 devel last message repeated 6 times
Nov 20 16:15:19 devel last message repeated 9 times
Nov 20 16:16:31 devel last message repeated 6 times
Nov 20 16:17:51 devel last message repeated 7 times
Nov 20 16:19:00 devel last message repeated 8 times
Nov 20 16:20:01 devel last message repeated 6 times
Nov 20 16:21:16 devel last message repeated 9 times
-- Cheap Linux CD's http://mpeters.us/linux/
