I wouldn't stress about issues. Most tablets are issue free but those people don't usually come and post in a forumn... " hey my tablet is wonderful!" I have had mine since October, not one issue that I didn't cause myself and that couldn't be easily fixed.
A cold boot is a way off shaking out any bugs, like when there are random files or such left behind after installing and uninstalling apps. Clears out the cobwebs so to speak. It is done by charging the tablet, then unplugging and powering it off. Hold the volume down button and power button at the same time. Continue holding until you see 4 icons midscreen and some tiny white text top left corner. Release the buttons and let it start up... voila!
It is advised to do this before AND after any system updates, and any time your tabletis acting cranky.