This karamba applet is based on transwhite. I adapted it a bit and modified it so that it fits to my system and themes.
Detection of OS is not automatically right now, so you probably have to adapt the script.
To change to the right network interface change all ra0 entries to your interface.
CPU fan, usage and type
System ID, KDE version and user
Uptime, kernel version
RAM and SWAP Usage
hard disk usage