I have some problems using Plupload with the Internet Explorer 7 / 8 / 9:

I tried to avoid the additional send button as show here:

http://www.plupload.com/example_queuewidget.php

because it seems to confusing.  Some users think the upload is complete after clicking on "start upload" and forget to click on this button and the uploaded files are only in the temporary folder but not in final destination path.

So I tried to work with this code part:
if (uploader.total.uploaded == uploader.files.length)
  $('form').submit();
});

to submit the form automatically after the last upload has been completed. It works fine on Mozilla or Safari. But on all versions of IE (using the Flash or silverlight version) the value of uploader.total.uploaded seems to be always 1 step less than uploader.files.length in the end. The only way to force the automatic submit would be:
if ((uploader.total.uploaded-1) == uploader.files.length)
  $('form').submit();
});

Then the form is submitted, but the form is empty. All necessary form fields like the temporary files names etc. are missing. I would be glad if anybody could help me.

Another comment: I tried the new beta version of the IE. Obviously the HTML5 abilities of IE9 are not recognized here, so only the flash or silverlight versions are used.

Thank you for your help in advance!