I have only a quick question. Does Kubuntu, Xubuntu and others has the same level of security like the plain Ubuntu? I mean security for the desktop environment, because I know that for others it has, because it is based on Ubuntu. And also, do I need to worry about it, as I am not an advanced user? (not beginner, but I'm not extremely good at IT as others :D ) Thank you for your answer!
Security is the same across all supported derivatives of Ubuntu (Kubuntu, Xubuntu, Lubuntu, etc.).