Mar 10, '08 07:30:00AM • Contributed by: fyngyrz
The solution is to open ~/Library » Preferences » com.apple.internetconfig.plist with the Property List Editor (Xcode required), navigate to the Download Folder item, and delete the value (not the key; just the value under it), then save the property list file.
The next time you save a downloaded file in Firefox, OS X will ask you where you want it. Answer the question, and the problem goes away permanently.
[robg adds: A commenter on the queue review site notes: "This is a bug with Firefox that I see with our users all the time. In prefs, the download folder looks like it's set correctly, but Firefox wants to download to some read-only folder on the hard drive (it's always arbitrary). We have had to delete ~/Library » Preferences » com.apple.internetconfig.plist -- but we ALSO have had to delete ~/Library » Preferences » com.apple.LaunchServices.plist to resolve it."]
