Anyone heard of this (or know what a solution may be)?

Every once in a while, the wireless on my laptop will mysteriously disable itself. Last night, I went to bed and I know that my wireless was working. When I woke up this morning, the laptop's wireless was disabled. The only way I could get it to reenable was to reboot the machine.

Mozy was running when I went to bed, but I don't know if that has anything to do with it or not.
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"Nature has constituted utility to man the standard and test of virtue. Men living in different countries, under different circumstances, different habits and regimens, may have different utilities; the same act, therefore, may be useful and consequently virtuous in one country which is injurious and vicious in another differently circumstanced" - Thomas Jefferson, moral relativist