Do you use Trace.Fail or set AssertUIEnabled="true" in your web.config?

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Have you ever seen dialogs raised on the server-side? These dialogs would hang the thread they were on, and hang IIS until they were dismissed. In this case, you might use Trace.Fail or set AssertUIEnabled="true" in your web.config.
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See Scott's blog [Preventing Dialogs on the Server-Side in ASP.NET or Trace.Fail considered Harmful](http://www.hanselman.com/blog/PreventingDialogsOnTheServerSideInASPNETOrTraceFailConsideredHarmful.aspx)
 public static void ExceptionFunc(string strException)
{
    System.Diagnostics.Trace.Fail(strException);
}
Figure: Never use Trace.Fail &lt;configuration&gt;
   &lt;system.diagnostics&gt;
      &lt;assert AssertUIEnabled="true" logfilename="c:\log.txt" /&gt;
   &lt;/system.diagnostics&gt;
&lt;/configuration&gt;
Figure: Never set AssertUIEnabled="true" in web.config &lt;configuration&gt;
   &lt;system.diagnostics&gt;
      &lt;assert AssertUIEnabled="false" logfilename="c:\log.txt" /&gt;
   &lt;/system.diagnostics&gt;
&lt;/configuration&gt;
Figure: Should set AssertUIEnabled="false" in web.config