Version: 0.9 (using KDE 4.6.4)
The red cross button beside the "Auto eth0" or wireless networks does not really disable the connection. It merely disconnects and reconnects. It is a tad cumbersome when all one wants is to be able to disconnect from ethernet or wireless without having to do an ifconfig <ifname> down, pulling the cable out or disabling radio.
Steps to Reproduce:
1:Connect to a network of your choice.
2:Click the red cross button beside connection name
It did not cause the interface to stay down.
That interface/network should disconnect and stay disconnected
*** This bug has been marked as a duplicate of bug 274826 ***
*** This bug has been marked as a duplicate of bug 274846 ***