[ubuntu] Internet Stopped Working (Ubuntu 9.10)

view full story

http://ubuntuforums.org – I'm still getting used to Ubuntu, but a few days ago, my brother told me that when he was googling something, Mozilla froze, and he did a manual power down and reboot. Now, the network manager doesn't show up in the top right corner, and upon start up, I was asked to put in my password to unlock the keyring, but that didn't show up either. I am unable to connect to the internet now either wireless or wired. I'm not quite sure what to do. (HowTos)