title: Form-submit fails in IE6/7 , works fine in FF3 and Chrome
body: <p>Since last weekend there is a problem logging in on our vendor site with IE only. In FF3 and Chrome it works fine. 
  This is a simple ASP.NET (1.1) site using the following code for the login button:</p>
  
  <pre><code>&lt;asp:button id="btnLogin" runat="server" CssClass="dll-button" Text="Login"&gt;
  &lt;/asp:button&gt;
  </code></pre>
  
  <p>In HTML this is converted to </p>
  
  <pre><code>&lt;input type="submit" name="btnLogin" value="Login" 
   onclick="if (typeof(Page_ClientValidate) == 'function') Page_ClientValidate(); "
   language="javascript" id="btnLogin" class="dll-button" /&gt;
  </code></pre>
  
  <p>When I don't enter a username I get a message that it's required so something happens, but the form is not submitted to the server.
  Sounds to me like a client (IE-only) problem, but all IE-clients spontaniously started behaving like this. That's why I suspect the server, though. I found out there were 2 .NET framework updates on the server last weekend, that might cause the problems, KB928366 an KB947742. But I can't relate these update-desciptions to the problems we're facing now.</p>
  
  <p>Am I overlooking something?</p>
  
  <p>I'm considering to uninstall these updates. Could that solve anything?</p>
  
  <p>Regards,
  Roel</p>