急，求助，这个是什么问题
在后台发布文章时，有段落的文章就发布不了，没有段落的文件就可以正常发布
有段落的文章出现以下错误
而且，我以前发布的文章都已经没有段落了。这是怎么回事？
Server Error in '/' Application.
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A potentially dangerous Request.Form value was detected from the client (TBIntro="...dfasdfasdf<br />
dfasdfasdfas...").
Description: Request Validation has detected a potentially dangerous client input value, and processing of the request has been aborted. This value may indicate an attempt to compromise the security of your application, such as a cross-site scripting attack. To allow pages to override application request validation settings, set the requestValidationMode attribute in the httpRuntime configuration section to requestValidationMode="2.0". Example: <httpRuntime requestValidationMode="2.0" />. After setting this value, you can then disable request validation by setting validateRequest="false" in the Page directive or in the <pages> configuration section. However, it is strongly recommended that your application explicitly check all inputs in this case. For more information, see [url]http://go.microsoft.com/fwlink/?LinkId=153133.[/url]
Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client (TBIntro="...dfasdfasdf<br />
dfasdfasdfas...").
Source Error:
The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:
1. Add a "Debug=true" directive at the top of the file that generated the error. Example:
<%@ Page Language="C#" Debug="true" %>
or:
2) Add the following section to the configuration file of your application:
<configuration>
<system.web>
<compilation debug="true"/>
</system.web>
</configuration>
Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.
Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario
求高手指点，或帮忙解决，万分感谢