[Xperia Z Android Development] ZeRoWaR:
Thanks for the reply, but check your logcat, it's also spammed like mine with the same error by MP-Decision:

12:40:00.765 E/MP-Decision( 246): Error(-19) changing core 3 status to offline
04-14 12:40:00.765 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu2
04-14 12:40:00.765 E/MP-Decision( 246): Error(-19) changing core 2 status to offline
04-14 12:40:00.765 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu1
04-14 12:40:00.765 E/MP-Decision( 246): Error(-19) changing core 1 status to offline
04-14 12:40:00.815 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu3
04-14 12:40:00.815 E/MP-Decision( 246): Error(-19) changing core 3 status to offline
04-14 12:40:00.815 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu2
04-14 12:40:00.815 E/MP-Decision( 246): Error(-19) changing core 2 status to offline
04-14 12:40:00.815 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu1
04-14 12:40:00.815 E/MP-Decision( 246): Error(-19) changing core 1 status to offline
04-14 12:40:00.865 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu3
04-14 12:40:00.865 E/MP-Decision( 246): Error(-19) changing core 3 status to offline
04-14 12:40:00.865 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu2
04-14 12:40:00.865 E/MP-Decision( 246): Error(-19) changing core 2 status to offline
04-14 12:40:00.865 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu1
04-14 12:40:00.865 E/MP-Decision( 246): Error(-19) changing core 1 status to offline
04-14 12:40:00.915 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu3
04-14 12:40:00.915 E/MP-Decision( 246): Error(-19) changing core 3 status to offline
04-14 12:40:00.915 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu2
04-14 12:40:00.915 E/MP-Decision( 246): Error(-19) changing core 2 status to offline
04-14 12:40:00.915 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu1
04-14 12:40:00.915 E/MP-Decision( 246): Error(-19) changing core 1 status to offline
04-14 12:40:00.965 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu3
04-14 12:40:00.965 E/MP-Decision( 246): Error(-19) changing core 3 status to offline
04-14 12:40:00.965 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu2
04-14 12:40:00.965 E/MP-Decision( 246): Error(-19) changing core 2 status to offline
04-14 12:40:00.965 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu1
04-14 12:40:00.965 E/MP-Decision( 246): Error(-19) changing core 1 status to offline
04-14 12:40:00.995 D/dalvikvm( 3286): DexOpt: load 103ms, verify+opt 228ms, 1279636 bytes
04-14 12:40:01.015 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu3
04-14 12:40:01.015 E/MP-Decision( 246): Error(-19) changing core 3 status to offline
04-14 12:40:01.015 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu2
04-14 12:40:01.015 E/MP-Decision( 246): Error(-19) changing core 2 status to offline
04-14 12:40:01.015 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu1
04-14 12:40:01.015 E/MP-Decision( 246): Error(-19) changing core 1 status to offline
04-14 12:40:01.065 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu3
04-14 12:40:01.065 E/MP-Decision( 246): Error(-19) changing core 3 status to offline
04-14 12:40:01.065 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu2
04-14 12:40:01.065 E/MP-Decision( 246): Error(-19) changing core 2 status to offline
04-14 12:40:01.065 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu1
04-14 12:40:01.065 E/MP-Decision( 246): Error(-19) changing core 1 status to offline
04-14 12:40:01.115 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu3
04-14 12:40:01.115 E/MP-Decision( 246): Error(-19) changing core 3 status to offline
04-14 12:40:01.115 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu2
04-14 12:40:01.115 E/MP-Decision( 246): Error(-19) changing core 2 status to offline
04-14 12:40:01.115 E/MP-Decision( 246): Error 13 setting online status to 0 forcpu1
04-14 12:40:01.115 E/MP-Decision( 246): Error(-19) changing core 1 status to offline

And like i said, i already made a clean reflash and so on, it seems to me like the latest cm nightly has this problem overall.