晚上打开union.itlearner.com的页面，发现如下提示：

Server Application Error

The server has reached the maximum recovery limit for the application during the processing of your request. Please contact the server administrator for assistance.

看来精通的这台服务器是英文版的Win2k。查了一下IIS日志，发现此时仍然记录访问页面，但会出现： Out-of-process+ISAPI+extension+has+exceeded+crash+limit.的提示。

估计是IIS满了或者满cpu限制了，但都又不像。后来又发现，htm页访问正常，就访问asp页时会有这样的提示:(

网上查了一下关于这段的解释，但没有查到最精确的回答：

来源：http://www.experts-exchange.com/Web/Web_Servers/Q_20694952.html

We had a very simliar issue where HTML pages would be serverd but ASP pages would return " Server Application Error: The server has reached the maximum recovery limit for the application during the processing of your request. Please contact the server administrator for assistance.'

You can tell your server has been infected if:

    * The RPC Service is stopped
    * When domain applications are created,the user gets the following error in the browser:
      Server Application Error
      The server has reached the maximum recovery limit for the application during the processing of your request.
      Please contact the server administrator for assistance.

Scans and fixes are available from your favorite antivirus/security web pages such as Symantec.

Maybe this will help.