One day the power just went off when was using my desktop computer running Ubuntu 11.04. When later the power came back, I couldn't access the internet.When I open any browser, it tells me I have no connection. Even my desktop network icon shows that I am offline. But when I check the wired connection behind my desktop computer, it shows that I connected with a green blinking LED.What is going on with my desktop? All the computers in our lab are fine. Only mine which I use to administer our computer lab has this problem.When I run the iconfig command this is what I get:eth0      Link encap:Ethernet  HWaddr b8:ac:6f:37:0d:58            inet6 addr: fe80::baac:6fff:fe37:d58/64 Scope:Link          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1          RX packets:2759 errors:0 dropped:0 overruns:0 frame:0          TX packets:27 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:1000           RX bytes:479931 (479.9 KB)  TX bytes:6608 (6.6 KB)          Interrupt:16 lo        Link encap:Local Loopback            inet addr:127.0.0.1  Mask:255.0.0.0          inet6 addr: ::1/128 Scope:Host          UP LOOPBACK RUNNING  MTU:16436  Metric:1          RX packets:118 errors:0 dropped:0 overruns:0 frame:0          TX packets:118 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:0           RX bytes:13086 (13.0 KB)  TX bytes:13086 (13.0 KB)And when I run the route -n command, this is what I get:Kernel IP routing tableDestination     Gateway         Genmask         Flags Metric Ref    Use Iface
Network icons showing not connected when my wired network cable shows that I am
ubuntu;networkmanager