If you're running CM10 on maguro and are tired of the slowness (because seriously, wtf is wrong with it, it's absurd, we need to fix it, I know) just flash the stock AOSP kernel.

http://android.git.r3pek.org/?p=device/samsung/tuna.git;a=blob_plain;f=kernel;hb=HEAD

I haven't tested how it affects battery life yet but I hope it fixes that (because batterylife sucks atm too, CM10 on gnexus, at least the gsm variant, is broken badly).
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