I was trying out everything KDE 4.1.3 gives me and loved this desktop theme Elegance.
Of all the above, I finally set Elegance as the active theme:
Wallpaper belongs to the KDE 4.2 defaults family. I really like this black + green combination.. very soothing! Since about one whole week, I have it on now.. Wow! that’s the longest time I haven’t fiddled with the UI! 
Very nice theme! I’ve been meaning to try KDE for a while now but haven’t had the time yet.
I see you have an icon for IP Messenger on your desktop. Is that the one you can download from http://www.ipmsg.org/ ?
I’m using it too actually.
@Silvio
Yes, but it’s the WIN32 version that I use with Wine as I wasn’t able to compile the tarball and get it to work. With Wine, it does not save folders but only files..