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今天打开电脑以后突然发现ALEXA工具条变了样子，

然后打开C:\WINDOWS\system32 目录下发现了工具条的主要两个文件已经升级了，

而且此次升级与以往不同的是一次全新的升级，可能ALEXA要进行大的改动，以此来应对国内日益猖獗的作弊行为。
问了一些朋友，他们的工具条都没有发生变化，笔者推测此次笔者电脑上的工具条升级可能为抽样升级，
来测试升级的成功率，如果升级成功率高的话，ALEXA工具条将在近期进行大规模的升级。
下面是ALEXA官方的报道：
Alexa Toolbar Update Released Today
Alexa's popularity has been growing by leaps and bounds over the last several years and none of it would be possible without the Alexa Toolbar. Good reasons to install the Alexa Toolbar:
The toolbar provides quick and easy access to the data that you expect from Alexa, including rankings, related links and more.
You can help improve the data by installing the toolbar. The more people use it, the better it gets.
Alexa is free. Alexa is a community of users improving the Web for everybody. Just by using the Alexa Toolbar you are ensuring that everybody has access to a free and impartial source of traffic information. If you don't have the toolbar already, what are you waiting for?
The new toolbar, version 7.1, is a minor revision that includes some design improvements as well as one nifty new feature... it automatically shows a red or green arrow indicating whether the site's traffic rank is improving or declining.
For those of you that already have an Alexa Toolbar installed, thank you. Your Alexa Toolbar should auto-update within the next week or so. If you can't wait, feel free install it now.
Oh, and for those of you on FireFox, we still recommend the Search Status Toolbar.