Description:
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when posting an form with the webbrowser mozilla firefox an dialog box appears that says "The document has no data" even when the form has data and works with explorer.

This problem started when we upgraded to version 4.3.10, it worked fine in 4.3.9

I have tested to change the version back to 4.3.9 and then it works.

The form uses enctype="multipart/form-data" for making it possible to upload a picture. When posting the form with an picture it works so perhaps there is something wrong with posting mulitpart/form-data.



Reproduce code:
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To reproduce the failure go to this address, it?s ok to post a  new ad. Put php as a name and I now it?s a test ad.

http://www.bodoo.net/NewAd/kategori.php

Choose to make an ad for cars and fill in a 
name 
email
subject
text
currancy
brand
miles
check the agree box

You should now get an dialog box wich says '
"The document has no data"

If you repeat the above but ad an picture it works.





Expected result:
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The expected result should be a confirmation page that says 
"Your ad i now saved to our database"

Actual result:
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A dialog box that says "The document has no data"