[ubuntu] "Networking is disabled" on startup

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http://ubuntuforums.org – I have Ubuntu 9.10 running on a Dell E6400. Nearly every time when I start it up, wireless networking doesn't work. If I click on the networking icon, Wired Networking shows "Disabled" (which is normal) and Wireless Networking shows "Networking is disabled". My dell has a physical switch on the side to turn wireless on and off. If I switch it to off, go into standby, and then return, networking suddenly works again. Any idea what's up with this? (HowTos)