刚才在后台看访问统计，无意中点了Post，出乎意料的是竟然出现个404，惊！点点其他的页面，同样是404，急！赶紧看看FTP，是不是被黑客黑了（我这种小站？？），530密码出错！！马上去edong看看，login，查看虚拟主机状态，关闭？？看看备案资料，出错！原来是备案的编号填写出错了，打开邮箱，找到备案的邮件，把编号复制，填上，看看状态——启动，搞定！！虚惊一场！

继续网络闲逛，看见自己的blog。咦？PR值竟然是0！！
怎么回事？这PR也太神奇了吧，说来就来，说走就走！点开prchecker.info确认一下是不是这的变成0了。一看就发现新闻了：

28 May, 2005 – Update: Google.com have stoped their pagerank service today, and ALL the sites have ZERO rank now. We do not know if this is a temporary problem, but we hope it is, and we hope they will resolve this issue in several days, we’ll post an update when it is available.

Learn more e.g. here: http://www.webproworld.com/viewtopic.php?t=46300

原来Google停止了Pagerank服务（不知道是不是暂时的）！所有的网站的PR都变成0了！难道真的像Google说的那样，PR只是一个玩具！但愿不是～～
[update 2005-05-31]今天打开firefox一看，发现PR又有了

WordPress1.5.1版本问题可真不少，前段时间是trackbacks的问题，更新到1.5.1.1。现在有出现了安全问题（安全最重要！）！看看是怎么回事！

It has come to our attention that under certain circumstances there is a security vulnerability in WordPress that may be triggered if you’re running the default template. We were able to respond very quickly (under 40 minutes) and update the download to 1.5.1.2. You can upgrade by overwriting your old 1.5 files or if you would like to apply the fix manually it is relatively simple:

1、Open the wp-includes/template-functions-category.php file in a text editor like Wordpad.
2、Go to around line 103 where it says get_the_category_by_ID.
3、Create a new line after that and paste in $cat_ID = (int) $cat_ID;

One note, even if the vulnerability was present in your blog, you would still be safe if your host ran mod_security on their servers. It is an Apache module which can provide very high-level protection against everything like the vulnerability above to comment spam. We will be updating the hosting page shortly to reflect which hosts there support mod_security or not.

当你使用的theme是默认theme的时候，将会引发这个安全漏洞（其他模板不会？？为了更安全还是补上的好！），但如果你的服务器运行于mod_security下，这个问题也就不是问题了！（我在使用的服务器没有这个哦～查看方法：下载一个PHP探针，打开后，看“服务器解译引擎”或phpinfo中的”SERVER_SOFTWARE”）

补丁方法：
1、去wordpress下载1.5.1.2版本，覆盖原文件即可；
2、如果你想自己动手，很简单。打开wp-includes/template-functions-category.php（可以在后台的Manage→Files中打开，方便！），查找到get_the_category_by_ID（在103行，是个函数名），在这行的下面加上$cat_ID = (int) $cat_ID;
既是把
function get_the_category_by_ID($cat_ID) {
$category = &get_category($cat_ID);
return $category->cat_name;
}
改为
function get_the_category_by_ID($cat_ID) {
$cat_ID = (int) $cat_ID; //添加这行
$category = &get_category($cat_ID);
return $category->cat_name;
}

原因还不清楚，难道跟我上次用的那个插件有关？？
到现在还是没搞定，烦～～
[PS]谢谢 jay在留言簿上的提醒！！之前的很多留言都没能及时回复，在这里跟大伙说声对不起了～
[ungrade]把wordpress升级到了1.5.1.1，好像现在可以了！