I've had a recurring issue that I'm not sure is related to the kernel, but since I use the stock ROM I figured I would post it here to see if anyone else has experienced it.
Sometimes I lose sensor data until I reboot, and it's always a different sensor -- ambient light, proximity, or accelerometer. Symptoms include automatic backlight not adjusting (ambient light), screen not blanking during a phone call (proximity), or loss of motion control in Temple Run or elsewhere (accelerometer).
I believe this may be related to a yet-undiscovered race condition somewhere in i2c or GPIO handling, but I haven't been able to track it down yet.
Has anyone else ever experienced anything like this? I'm not discounting that I could just have hardware damage.