Comment 7 for bug 1180120

Try this dirty workaround for now:

http://askubuntu.com/questions/261559/keyboard-repeat-delay-is-reset-when-plugging-in-usb-keyboard-in-ubuntu-12-10-xfc/666488#666488

This will work if you have only one or a handful of keyboards to use on regular basis, and if you are the only one using the X session on your device. Other cases can be handled by extending the scripts posted there.

FYI this issue also exists in Debian 7 that uses xfce 4.8.

Wirawan