Comment 4 for bug 742380

Comment out the line in your xorg.conf specifying the "keyboard" driver; that's no longer needed, and you should be using evdev instead. Indeed, you can try booting natty with no xorg.conf and I think it should work for your hardware.

Don't know if that's what leads to your bug though. "Error activating xkb configuration" is a generic error message that pops up whenever there is a layout problem. None of the log files attached here indicate what the real problem is. The wrong keyboard driver is my best guess, give that a shot.