Bug#494477: Additional info on failure...
I've upgraded three systems to use 2.6.26 kernels. (2.6.26-5 or 2.6.25-6) and see this
problem on all of them. (One has a P2, another a P3, and the last a P4 CPU.)
Booting an old 2.6.25-5 kernel from grub makes the problem go away.
The insert key is a mode.. On odd presses it disables the keys and on even presses they
Using showkey I found:
showkey --scancodes shows the same output when the keys are working or not.
showkey --keycodes is the same.
showkey --keymap output three bytes for each arrow key only when the keys work (else
Hope this helps.