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Hello. I recently installed Ubuntu 12.10 64-bit. While I am just browsing the Internet, network connectivity is fine. However, when I watch a movie or download something the Internet connection fails. If I reboot the modem, everything works, but not for long. How do I correct this problem?

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Welcome to Ask Ubuntu! We need more hardware information to help you, can you look at this question and then edit your question adding the information. – Seth Jan 9 '13 at 15:59

There are many bug reports describing such symptoms. Most likely a driver bug. Please search for the names of your network hardware drivers.

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