Not sure how or why this happened, but this can be easily fixed.
From a terminal open interfaces file
sudo gedit /etc/network/interfaces
add the following two lines if missing
auto eth0
iface eth0 inet dhcp
restart networking
sudo /etc/init.d/networking restart

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worked for me.
- Visitor 30 weeks 2 days agohad to remove other auto eth0 entries for dsl-provider
thank you.
worked great! Thanks!
- Visitor 36 weeks 6 days agoright clicked on the network icon worked for me.
- Visitor 45 weeks 4 days agoubuntu 10.04 is giving me only headaches so far. interface, audio and network problems. lol.
definetly a bug
- Visitor 45 weeks 6 days agoif you right click on the little wifi symbol u can re-enable networking
- Visitor 1 year 6 weeks agoOmg thank you so much :)
- Visitor 1 year 13 weeks agoStay BLESSED <3
worked for me too i had difficulty in connecting internet... thanks for the post
- Visitor 1 year 15 weeks agoWorked for me!! Thanks!!
- Visitor 1 year 19 weeks agoRight-clicking did the trick where the shell commands did not - thanks!
- Visitor 1 year 21 weeks agoThanks a lot, editing the interfaces file worked for me as well, scary though!
- Visitor 1 year 22 weeks ago