[opensuse] KNetworkManager: Such a tramp!

My KNetworkManager seems to find networks (especially un-secured ones) in the neighborhood and connect to these at random each time I power up. Is there a way to get it to stay home, and always connect to my router (which does use security) in preference to what ever it finds? And whats up with that Signal Strength output when you hover over the icon in the tray? What scale is that based on, and why isn't the signal to noise ratio printed. It tends to always just say 100. 100 What? -- _____________________________________ John Andersen