My laptop has been working fine with ubuntu 10.04, and earlier today it shut down after running out of battery. I came to use it later and discovered that the wifi icon had disappeared from the panel bar, and it won't connect to the wireless network, or via a wired connection.
I have had a play around with this, tried
ping -c5 google.com
ping: unknown host google.com
and ping -c5 184.108.40.206
connect: Network is unreachable.
I have other computers connecting to this network and know that it is working fine.
I have also restarted the gnome panel in an effort to recover the icon for the wifi, but no luck!
Any help would be much appreciated!!