Just tossing my confirmations out there:
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So, the increase appears to also cause additional rejects that should be discounted from total increase gain, cutting it down a full 1% in my case.
This is really not good. I honestly do not know why this would happen; are you sure it is related to the patch and isn't a result in the general randomness when searching for solutions? Perhaps someone else, more familiar with bitcoin mining than me, can chime in?
Not saying it's the patch, just reporting the results. That's why I posted the population of shares each measurement was done over.
If my reject rates are higher over a prolonged period, then I may change one of my cards running on the same rig, back to the old kernel values and compare them head to head over a few days.