Could some one please explain to me what the differences are between Ubuntu and Kubuntu? I don't really understand the Gnome V.S. KDE thing.

So from a users point of view what are the pluses and minus between the two, or does one just have a brown screen while the other is blue? one has the tool bar at the top of the screen the other has it at the bottom.

Currently I am running Feisty with and XP duel boot. ( haven't booted windows in months )

And on a second computer I am running Gutsy. Been thinking about giving Kubuntu a try just to see what it is like and what all it has.

If some one could tell me what to look out for so I will notice the diferances I would really appreciate it.