766553 - After last update Firefox is returning false mime-type for pdf files. It return "application/save" instead of "application/pdf".

Status: RESOLVED DUPLICATE of bug 373621

(Firefox :: Untriaged, defect)

Description

[sindijs]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0) Gecko/20100101 Firefox/13.0.1
Build ID: 20120614114901

Steps to reproduce:

I created web form with file field. Web form allowed only pdf file types to upload.


Actual results:

Script couldnt safe file on disk because mime-type was false, although file was uploded as pdf. I checked mime-type, and it was "application/save" instead of "application/pdf'.


Expected results:

Mime-type must be "application/pdf" after pdf file was uploded.

Comment 1

[Matthias Versen [:Matti]]

This has nothing to do with the update.
You have downloaded once a file from a webserver that served a PDF file as application/save and you selected to remember that selection (e.g. open with Acrobat).

The wrong entry is stored in the file mimetypes.rdf in your Firefox profile.
To locate the profile enter about:support as URL in FF and use the link to your profile at the top. 
Close Firefox and remove the file or edit it to fix the issue...