"expand" message on the screen

i have a Google galaxy nexus with 4.2.1
i have a constant "expand " message on the phone screen that doesn't disappear even when i need to use keyboard and it hide some letters . i have no idea how to get ride from it ...i reboot the phone few times and after few minutes it appears again ...
i additional the display doesn't enter to sleep mode after the 30 second of not -use ( as set) .
i will appreciate your help

thanks
Zachi

post screenshot

Never heard of that happening. Please post a screen shot.

Sent from my Galaxy Nexus using Android Central Forums

Without a screen shot I'd venture a guess you have an errant app. Try uninstalling the last few apps you've installed and see if it goes away.

Sent from my Galaxy Nexus using Android Central Forums