Samsung Galaxy 5 Wi-fi stops working: "ar6000 driver fails to load"

My Galaxy 5 has this problem for some months now: wifi stops working, I try to enable it and the phone says "Error" without any other further information. The only way to make it work again is rebooting the phone. I think this problem has been related here before. But I managed to save the system log and got the following: 08/04/2011 23:01:50 [ERROR] WifiService(166) setWifiEnabledDialog: true 08/04/2011 23:01:50 [ERROR] WifiService(166) ****************setWifiEnabledDialog(), allowWifi****************true 08/04/2011 23:01:50 [INFORMATION] WifiService(166) setShowAccessPointListDialog():true 08/04/2011 23:01:50 [INFORMATION] WifiService(166) setWifiEnabledDialog(): true 08/04/2011 23:01:50 [INFORMATION] wlan_tool(11010) wifi loading 08/04/2011 23:01:51 [INFORMATION] wlan_tool(11014) Driver is initialized. load it 08/04/2011 23:01:51 [INFORMATION] wlan_tool(11021) ar6000 driver fails to load 08/04/2011 23:01:51 [INFORMATION] wlan_tool(11029) wifi unloading I'm trying to understand what's going on here. What exactly is ar6000? Maybe the network interface? How can I get more information about the error itself? I have already uninstalled almost any app that could change the wifi behavior, and the problem persists. Juice Defender is still installed, but the problem already existed before I first installed it.