"fiq reported nyet" keep prompting on raspberry pi 2

[rinaldi]

I've just installed Arch Linux for raspberry 2 following here and after the rasp boots a message "transfer to device 5 endpoint 0x01 frame xxx failed - fiq reported nyet. Data may have been lost" keep prompting almost every second even though the device appears to be responsive despite the messages. I noticed that when I remove the ethernet connection the message stops prompting. How do I fix this problem?

PS: After almost an hour the message stopped prompting and it showed:

https://photos-2.dropbox.com/t/2/AAApGq ... size=32x32