很幸运，看完这篇文章后，我根据文中的内容，终于恢复了spotlight，所以我现在对邮件什么的也能够搜索了。
OK，这篇文章在这里：http://www.technipages.com/os-x-leopard-enabledisable-spotlight.html
嗯，其实我当时是认为spotlight没什么用啊。但真没想到，原来spotlight接管了这么多功能。NND，我还仅仅以为spotlight是类似第三方插件似以的。没文化啊，真是太可怕了。。。。
上原文：
You may want to turn off Spotlight to increase system performance or to prevent it from indexing personal data. Here’s how to do it under Mac OS X.
Launch Terminal from the Utilites folder.
To disable Spotlight, type the following and press Return:
% sudo launchctl unload /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
To disable it permanently, type this instead:
% sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
To enable Spotlight type the following and press Return:
% sudo launchctl load /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
To enable it permanently, type this instead:
% sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
For instructions on how to do this in Mac OS X Leopard, see How to completely disable Spotlight.
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HOHO又能够搜索邮件是一件很开心的事情。开始怀念windows下面的搜索了。
很多朋友说你不会直接用find啊。是，如果我搜索文件，用find当然无所谓，可是邮件没办法啊。。