OK, but what about the lab coat?
cenzorrll
I would factory reset it or flash new firmware. Its probably fine, but that isnt how a fresh device should act. They've had some issues with encryption security that should mostly be fixed in the most recent beta firmware.
Anything KDE-related, it seems to me, makes you download a lot of other software that you don't really need, and so I'd like to go another route if possible (not dissing KDE, it's just not for me!).
Are you sure these aren't just dependencies? That's the way of linux, do one thing, do it well. Since KDE uses qt, you likely need to install the libraries and a few other packages it might rely on.
If it really is a bunch of stuff you don't need, make sure you have "install recommended" disabled in whatever package manager you've got. I learned that the hard way when I installed texmaker and it tried to install 10GB of packages.
Seriously, the number of tunnels they cut off in as soon as a call comes in is astounding.