我一直以為是偶發狀況，只是我胡思亂想，剛剛 search 一下才發現真有這麼一回事：
Apple Insider: MacBook wireless suffering after recent Mac OS X updates
有其他人有同樣的問題嗎？有什麼後續消息嗎？Owners of Apple's 13-inch notebooks are reporting that their Wi-Fi access is much less reliable after installing Mac OS X Leopard or more recent updates to Mac OS X Tiger, especially when the systems switch to battery power....
"Whenever I unplug my AC adapter, my wireless Internet goes a little crazy and starts continually disconnecting and reconnecting moments later," says one owner....
To date, the intermittent connection issue has not been publicly acknowledged by Apple and affects systems regardless of subsequent Mac OS X updates.
相關:
Apple Discussions 裡面的討論
有人靠這個方法解決問題了，但對我沒用...
