Comment 11 for bug 706327

@dino99,

There is no reason to purge and reinstall apparmor. All you need to do is disable the profile by doing:
$ sudo ln -s /etc/apparmor.d/usr.bin.firefox /etc/apparmor.d/disable
$ sudo apparmor_parser -R /etc/apparmor.d/usr.bin.firefox # or simply reboot

@all,
The firefox profile is opt-in, and is designed to prevent arbitrary file access (ie, it would prevent a bad extension from accessing system files not needed by firefox). Since the profile is opt-in and is working as it is designed, I suggest this be marked "Won't fix". Users who turn on the profile can copy the files to the appropriate upload location. That said, it would be nice if firefox gave some sort of feedback on not being able to access the file.