Hey Sho I've noticed that sometimes when I unlock the phone it takes like 1 or 2 seconds for the screen to become responsive, I'll try with other unlock options to see what happens, and I lost my unlocked status too, damn, I panicked because I don't live in the US but that app saved my ass.
Everything else seems to be running fine, the multi window is awesome, do you know if we could get HDR in the camera? And is it me or they increased the shapness in all of Samsung's JB ROMs? I noticed this too when I updated my cousin's SGS3 to JB.
And wow this really adds some value, with the true multitasking Samsung's JB ROMs are better than using stock
Edit: Does anyone know if the brick bug is still present in this kernel?