title: ASP.NET FileUpload.HasFile = false when trace disabled
body: <p>So, I have an WinXP SP3 development environment running ASP.NET VB Website 3.5 SP1 and something weird (at least to me) is happening:</p>
  
  <p>I put a FileUpload inside a page and it isn't inside any UpdatePanel (it has a script manager in the MasterPage, though). The fact is that when I disable the trace in Web.config it doesn't upload the selected file, bug guess it when I enable trace it works.</p>
  
  <p>Any suggestions?</p>
  
  <p>Best regards,
  Marco Alves.</p>