A very similar thing just happened to me with Ubuntu 10.04, kernel
2.6.33-02063305-generic and an HP EliteBook 8540p laptop.

I put the machine into suspend, and an hour or so later revived it. It
failed to wake up properly and I had to manually power-cycle it. Since
then, the WiFi/wireless interface is not working. Linux can see it and
read serial number, TX power, etc, but nm-tool shows it as "State:
asleep" and "lshw -c network" shows it as "network disabled".

I don't have Windows so I can't check the status there. But I can tell
you that my WiFi is now totally non-operational.

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Hardware rf kill switch not recognized (Sony Vaio Y11S1E)
https://bugs.launchpad.net/bugs/550454
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