Comment 27 for bug 90378

How does one disable ths behaviour in Firefox?

I often have Firefox save and open files in /tmp, and I find it a real pain to have to chmod the files so I can edit them. And I find it quite useful to save files in /tmp that I want to edit but I don't want to save long term as I know they'll be deleted upon reboot (instead of having them cluttering up my Desktop or ~/Documents directory).