Struts 1 radio button default selection at page start

Hello,

I am a new Struts 1 developer and had a problem while using <html:radio> tag.
The scenario is as follows:

I have a payment list inside a form and each payment is identified by the radio button on its first column. Whenever the user clicks a radio button from the page, the radio button sends the id of the
"payment" to the server. Then the user can click "Edit", "Delete" , "Print" buttons on the specific payment. Everything works normal up to now.

The problem starts after the user logs off. If I login as another user, then no problem again. Each user has his own payments so the list form and the radio buttons inside it gets refreshed etc.
However if I login as the same user again, the page opens at the state that last selected radio button appears selected at initial open.

I  save  the id of the selected radio button in selectedItem String on form. In reset method of the form, I make the String null. So the radio buttons property in server gets "null"ed on every logoff.
The form is in session scope btw.

However the form on the jsp doesnt get resetted or refreshed somehow. So there happens an    
inconsistency. Browser shows the last selected radio button from the previous logon as checked but the at the server inside the Form action the corresponding propery is null due to reset. Then when user tries to edit the item which as "shown" as selected on the page is actually isnt selected on server, the system craches since it tries to edit a null payment.

At first I thought its a browser cache problem, and added
   
<controller>
          <set-property  property="noCache" value="true"/>
     </controller>
to my struts-config.xml

and
  <meta http-equiv="pragma" content="no-cache" />

inside my jsp,

I also manually deleted by browsers cache but none of them worked.

I cant find the reason of the situation. Is it because my logout doesnt delete the session etc?
But the problem is on jsp page not on the server (since reset is called successfully all the time).

Is there any way to make the jsp to understand session is renewed on first page open only for once so that     <html:radio> tag wont show the last selected from last session .

The problem doesnt happen between different browsers btw. (If I login from IE, then login from FF as the same person last selected radio isnt selected)

I have been struggling with this for 2 days and the bug is really annoying. I would appreacite any help...

below is the paymentlist.jsp that the radio buttons is added 
   <html:form  action="/paymentEdit">
....... 
 
<%-- start with an iterate over the collection payments --%>
          <logic:iterate name="paymentListForm" property="payments" id="payment">
            <tr>
              <%-- payment information --%>
              <td>
              <!--  <input type="checkbox" value="<bean:write name="payment" property="id"/>" name="savePaymentSelection"> --> 
              
        
              
             <html:radio property="selectedItemInterate" idName="payment" value="id" onclick="paymentClicked()">
              	
            </html:radio>
 
 
 
 
Below are where I reset the selectedItemInterate ()
 
public class PaymentListForm extends ActionForm {
 
	 private String selectedItemInterate;
 
	public void reset(ActionMapping mapping, HttpServletRequest request) {
 
		payments = new Payment[0];
		this.selectedItemInterate = null;
      }

                                  

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