I have wireless Internet access and it worked well on Ubuntu 12.04 LTS until today, when I installed updates from the Update Manager. After the reloading of the computer the sign of Internet disappeared and the Internet connection stopped working.
I went to the Network section of the System settings and got such a message:
The system network services are not compatible with this version.
ping 126.96.36.199 gives the result
Network is unreachable.
What should I do?
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