keyboard problem under X with a different kernel

[Frédéric L. W. Meunier]

I posted 
at http://marc.info/?l=linux-kernel&m=125494753228217&w=2 , but 
no answer.

My keyboard (ABNT2 PS/2) seems to be broken under X with 
2.6.31.2. After less than an hour, it starts acting crazy. The 
first time, all leds turned off and I couldn't type anything. 
The second time, all leds also turned off, but since it happened 
while I was pressing the Backspace key to delete text, it 
continued deleting, like if the key was pressed.

In both cases, the mouse (USB) still works and I can exit X,
where the keyboard works. There's nothing in the logs.

No problem with 2.6.30.9. Is it supposed to be a kernel or X bug 
?

Additional information:

I'm using all latest X11R7.5 packages, Mesa 7.6 and DRI for my

01:05.0 VGA compatible controller: ATI Technologies Inc RS690 [Radeon X1200 Series]