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0e1f616
(Get the code!)
I think this page speaks to the issue:
http://<email address hidden>
It seems that enabling and disabling the "hotkey" functionality is no longer supported, and the functionality is always on. The new behavior is to log a warning if this attempted, I suppose so that other software authors might notice this and change their code. From the end user's perspective there doesn't appear to be a real problem, except that we regularly get scary messages telling us that there's a serious kernel problem.
I see a few different ways to address this:
1. The kernel developers could downgrade the kind of warning emitted so that it is still logged, but does not trigger this tool.
2. All the software in Ubuntu that still enables or disables "hotkeys" could be hunted down and changed to quit doing this.
3. The tool that monitors kernel errors could be adjusted so that it quits flagging this as a critical issue.
Option 2 does not seem practical as a fix before Karmic is released, but "1" or "3" might be able to be accomplished soon. I'll bring this bug report to the attention of the kernel developers who made the patch which triggered the issue.