kdelibs < 4.7:
its not supported. to make it work, you have to install an http server (like polipo) and point kde to it.
kdelibs == 4.7:
Good news is, socks proxy \’is\’ supported. Bad news is, there\’s no UI to configure it.
To configure it, add the following line to ~/.kde/share/config/kioslaverc file:
socksProxy=socks://HOST:PORT
Then, go to System Settings->Network Settings->Proxy and make sure the \’Manually specify the proxy settings\’ option is marked. (But dont click the \’Setup\’ button)