Please bear with me, I am new to all of this and not really tablet friendly yet. Still getting used to it. I have the Vizio Tablet that is mainly used for the kids to use for games and videos via Apps downloaded. The wife told me she downloaded an upgrade from Vizio, does not know or remember what the upgrade was. The tablet now has a few problems. The market is missing from the apps. Anytime I try to browse the internet I get a pop up with Security Certificate Error, and I noticed the bar at the top has flip flopped with the bar at the bottom. It is also acting a little sluggish. Anyone here have any idea what she may have downloaded to cause this?