network-manager won't let me disable wlan

[mokrates]

In my neighborhood, there are some wlans i don't know the PSK to and don't want to use, cause they're not mine. nm nevertheless tries to connect to them and creates an entry in nm's database. If i try to unset the 'connect automatically' checkbox, nm doesn't let me, because i didn't provide a PSK, which i don't want, don't have, and quite frankly shouldn't need to disable the wlan.
If I just delete it, nm will find the wlan again and try to auto-connect it again.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: network-manager-gnome 0.9.1.90-0ubuntu6
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
NonfreeKernelModules: wl
ApportVersion: 1.23-0ubuntu4
Architecture: i386
CRDA: Error: [Errno 2] No such file or directory
Date: Wed Nov 16 17:10:49 2011
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu-Netbook-Remix 9.10 "Karmic Koala" - Release i386 (20091028.4)
IpRoute:
 default via 192.168.178.1 dev wlan0 proto static
 192.168.178.0/24 dev wlan0 proto kernel scope link src 192.168.178.62 metric 2
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
ProcEnviron:
 LC_TIME=de_DE.UTF-8
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: network-manager-applet
UpgradeStatus: Upgraded to oneiric on 2011-10-14 (33 days ago)

[dino99 (9d9)]

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