I have installed Kubuntu 9.10 recently, and have been able to initially connect to several unsecure wireless networks without any problems. However, after approximately 20-30 minutes, I completely lose the network connection and it is impossible to reconnect. I tried shutting down knetworkmanager and restarting it, and this did not work. I thought there might be a problem with knetworkmanager, so I installed nm-applet, the Gnome network manager program, and I had the exact same problem; I lose the network connection after 20-30 minutes and can't get it back until I reboot the system. As soon as I reboot the system, however, I am able to once again reconnect to a network.
I am running an Acer notebook computer.
I'd appreciate any input.
-Jack
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