disabled report viewer control in webform

I already have this in the webconfig and still the reportviewer is readonly when running the website.
<system.web>
<httphandlers>
<add path="Reserved.ReportViewerWebControl.axd" verb="*" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" validate="false">

The reportviewer control is disabled when running the website.
The following is my findings.
Can you see what I have to do please?
Thanks

Note that in web.config I have:

<system.web>
<httphandlers>
<add path="Reserved.ReportViewerWebControl.axd" verb="*" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" validate="false">


In the page which has the disabled report viewer control, I checked the ViewSource , I see these line:

h2>
Report Viewer Configuration Error
<p>The Report Viewer Web Control HTTP Handler has not been registered in the application's web.config file. Add <add verb="*" path="Reserved.ReportViewerWebControl.axd" type = "Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /> to the system.web/httpHandlers section of the web.config file, or add <add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /> to the system.webServer/handlers section for Internet Information Services 7 or later.</p>

BUt, I already have these in my web.config.
See below:
<system.web>
<httphandlers>
<add type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" validate="false" verb="*" path="Reserved.ReportViewerWebControl.axd">

...
...
<system.webserver>
<modules runallmanagedmodulesforallrequests="true">
<validation validateintegratedmodeconfiguration="false">
<handlers>
<add name="ReportViewerWebControlHandler" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" verb="*" path="Reserved.ReportViewerWebControl.axd" precondition="integratedMode">