Just got my Samsung Tab 3 today. Was excited and started working on it - things looked good, sound worked great. After I reached home, switched on my wifi and did a bunch of updates (only stock app updates - I did not install any new app). From then, things went south - sound stopped working, tablet restarted every 2 mins and it even started getting a bit warm. So I did a factory reset. The restarts stopped happening, but sound refuses to come on (Sound works fine if I use a bluetooth headset - external speakers seem to have stopped working). Another issue that I see is that video camera keeps failing. Infact, whenever I turn on the camera, the tab just becomes sluggish. This is my 3rd samsung product (had the s2, note 2 earlier) - I have never had these problems with any of my other devices. Makes me think that this device may not be a good one. To make sure it was not a camera app issue, I also installed Camera360 and that also made the device very sluggish. Has anyone else faced the same issue ?