Why does Media Storage consume so much memory and how to clear it for good? Android is generaly horrible when it comes to managing or saving disk space. But recently, new problem appeared, which is the Media Storage system application which fills my internal memory (disk memory) with 350MB of data.

I deleted the data using Application manager, but the data reappears. Why does it happen and how to stop it? I saw no negative side effects of deleting Media storage data.
This file apparently controls/manages what apps and files are believed to be on the phone.  Here is why I think that.
1. The galaxy Prime (don't laugh) was constantly "full" where it couldn't update anything, couldnt accept texts, etc.. on and on.
Attempting to Uninstall Facebook? done daily, only to look again and see it still installed.
Try to delete or move Pictures?  nope - "Failed to move" "Failed to delete" file.  Pics and Videos remain no matter what you do.
Final attempt? "Clear data" on the Media Storage file and Boom!!
Finally, the pictures, videos, we had tried to move or delete, and Facebook uninstall FINALLY ARE REMOVED!!

And space is back, texts are flowing, no more complaining of space etc..
I am guessing this file gets to size and point where it cannot be efficiently managed by the phone/android.