Why does my tablet keep having to be re-booted

[AC Question]

While I am working, it will suddenly either lock up and I have to play around with the on/off and the home key before it re-boots or it just goes straight to the Galaxy screen

 

[tony bag o donuts]

While I am working, it will suddenly either lock up and I have to play around with the on/off and the home key before it re-boots or it just goes straight to the Galaxy screen

Clear cache?
Reset the device?
Maybe an app is just causing a conflict.