回複：估計沒人能回答的： Fedora 10 Linux下如何關掉無線網卡？

I don't know what laptop you have. But on my laptop, after booting into linux (RedHat Enterprise 5.1), I can use: Fn + F2 key combination to turn off wireless.

Also, one more place you can try:
Go to BIOS to see if there is an option to turn it off.