File upload problem in Safari 3.1

Hi,
I was unable to upload files in safari browser from my windows machine.
Safari intermittantly hangs during file upload generating un-readable
code and forced to close My IDE and not facing problems in other
browsers.
Is there any problem with my form ,

<form action="<%= url_for
:controller=>'resources',:action=>'create_video'%>" name="upload_video"
method="post" enctype="multipart/form-data" onsubmit="return
validateVideosForm();">
<fieldset>
    <ul>
      <li>
        <label><%= l(:field_video_file)%></label>
       <div class="form_input"><span id="videospan"><input name="video"
type="file" id="video_file" onchange="return
validateVideoFileExtension(this)"/></span></div>
     </li>
                    <input id="video_upload_button" class="button"
type="submit" value="<%= l(:button_upload)%>" />
                </div>
            </li>
        </ul>
    </fieldset>
  </form>
       </ul>
   </fieldset>
</form>
            <li>