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DNS stopped working on laptop

Was working fine then stopped inexplicably. I can ping the gateway/DNS router/firewall (Untangle) using WiFi and cable using WiCd. Network Manager does not work on this computer Firefox reports ...
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1answer
960 views

Wicd tray icon fails to appear in system notification area even though in dconf>desktop>unity>panel/whitelist

I'm trying to get the Wicd (replacement for non-functional Network Manager) icon to show up in my laptop's systray/notification area. The solution that worked for 11.04 Ubuntu/Unity does not work for ...