Motorola moto 4g, battery drain, always high media server actitivity

I recently bought a motorola moto 4g, and I quickly noticed that the battery is going low very fast! With no use at all, it's going down 15% percent per hour...

The mediaserver is always taking up 50% of the battery, even when I deleted all the apps (really, áll the apps..). I did some restarting, reseting.. Nothing is helping...

Any suggestions??

By the way, sorry for my bad English ;)