You could prevent the user from clicking the link many times thru
javascript.

The following code is to prevent submitting the form many times. U could
modify it for the menu option.
I got it from javascript.internet.com.

<SCRIPT LANGUAGE="JavaScript">

<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->

<!-- Begin
var submitcount=0;

function reset() {
document.emailform.name.value="";
document.emailform.email.value="";
document.emailform.comments.value="";
}

function checkFields() {                       // field validation -
if ( (document.emailform.name.value=="")  ||   // checks if fields are
blank.
     (document.emailform.email.value=="") ||   // More validation scripts at
     (document.emailform.comments.value=="") ) // forms.javascriptsource.com
   {
   alert("Please enter your name, email, and comments then re-submit this
form.");
   return false;
   }

else
   {
   if (submitcount == 0)
      {
      submitcount++;
      return true;
      }
   else
      {
      alert("This form has already been submitted.  Thanks!");
      return false;
      }
   }
}
//  End -->
</script>

Hope this helped
T R Yogeeta

> ----------
> From:         Berger, Richard[SMTP:[EMAIL PROTECTED]]
> Reply To:     A mailing list about Java Server Pages specification and
> reference
> Sent:         Thursday, November 30, 2000 6:16 PM
> To:   [EMAIL PROTECTED]
> Subject:      IllegalStateException
>
> Hi,
> I am getting an 'IllegalStateException : reset() failed - data has already
> been sent to client' from my servlet. It is caused generally when a user
> hits a menu option multiple times without waiting for any response. Is
> there
> any way avoiding this occurring or stopping multiple identical requests
> from
> being processed ?
>
> Any help would be appreciated.
>
> Thanks
>
> Richard
>
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> Some relevant FAQs on JSP/Servlets can be found at:
>
>  http://java.sun.com/products/jsp/faq.html
>  http://www.esperanto.org.nz/jsp/jspfaq.html
>  http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
>  http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
>

===========================================================================
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Some relevant FAQs on JSP/Servlets can be found at:

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 http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
 http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets

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