This week, 4-23-13, I installed Ubuntu 12.04 LTS over Windows 7 on new Acer Veriton. Message box says 'Internet Wire disconnected'. The Win 7 OS stopped recognizing the internet last week, which is one reason I installed 12.04 to reestablish the internet connection, which it didn’t.
How can I fix it? Using the latest Firefox browser.
The same Internet connection works fine on my other Ubuntu 12.04 LTS PC.