slide down menu/quick setting menu crashing

[Collinvs]

My Quick setting slide down menu thing at the top keeps crashing. It appears over the top of other things I'm doing on the phoneand stops me pressing anything near the top of the screen it kind of half slides down and shoots back up it won't stay down to even press clear notifications, even the back button won't function when its playing up. 

Sometimes it goes nuts and flashes on and off turning the sound & wifi on and off.

It locks the whole phone up and won't let me turn it off and on with out restarting.

Is there any way to get rid of this slide down menu or solve the problem?

[Thommo]

Just sent a message to another member about this

My Z1 sometimes does this and I've tested with and without screen protectors - My theory is that it does this when the screen is full of finger marks/smudges and for some reason it must be registering these marks as touches - If I keep my screen clean it doesn't happen

I also have to hold power and volume up to restart my device

[Collinvs]

Ah that might be it right enough, I'll stick a screen protector on it and see if that solves the problem. 

Cheers!

[Thommo]

I tried with and without the only thing that seems to help is keeping my screen clean ie: wiping all those finger prints off with a cloth