[Q] Power-Button won't turn off my phone sometimes and Mobile Data doesn't work

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http://forum.xda-developers.com – Hey, I don't know why but sometimes my Power Button won't turn off my phone. Well ..actually not even the "Touch Control" Method works. But pressing it for ~5sec (whatever) makes the phone reboot. So the button is functionable. Also my mobile data sometimes doesn't work .. no signal at all. I recieve sms , can make a phonecall and WiFi etc still works. But not 2g/3g. I'm using rooted Stock ROM with Stock Launcher and "eXperience Pro" + "Touch Control" App if that does matter. Can somebody explain it to me :<? Thanks in advance (HowTos)