This driver problem behind this issues has been identified. When I upgraded from Ubuntu 13.04 or 13.10, the problem was solved.
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This driver problem behind this issues has been identified. When I upgraded from Ubuntu 13.04 or 13.10, the problem was solved.
I had Ubuntu 13.04 installed on an S400CA, and it had the WiFi problem, solveable only by applying the patch noted above. After upgrading to 13.10, the problems seems to have been permanently solved.