@ivnvir - you didn't buy an 'appliance' - you bought a computer that runs a Linux based operating system - with all the overhead that goes with it. Instead of whining because you can't find the silver spoon, learn how to use it, it's not hard - once you know your stuff, then you will earn the right to whine about real problems - hopefully more diplomatically.

There are many threads dealing with this problem, the majority of which have solutions. There is even an application in the repository that lets you configure the thumbnailer daemon.