Chris, note it's "Modules" not "Module" - this might explain why you're still seeing the message?
I doubt it fixes it, but I've uploaded a new xserver today that fixes an error in mesa that causes it to inappropriately free too many visuals when switching video modes. I'd be a little surprised if that fix also fixes this bug, but it's possible and worth testing.
Chris, note it's "Modules" not "Module" - this might explain why you're still seeing the message?
I doubt it fixes it, but I've uploaded a new xserver today that fixes an error in mesa that causes it to inappropriately free too many visuals when switching video modes. I'd be a little surprised if that fix also fixes this bug, but it's possible and worth testing.