If your download window doesn’t appear (Downloads with the download status, CTRL+J) in Mozilla Firefox, like it happened to me (for an unknown reason, but I can blame Mozilla) on the 2.0.0.10 version … try and do the things below to make it work again.
This is for Windows users, but the solution should work for Linux and OSX as well :
1. Go to your Firefox Profile folder, which is usually in “\Documents and Settings\Windows_Username\Application Data\Mozilla\Firefox\Profiles\Profile_name\” (the one bolded is your windows username and the bold and italic one is the firefox profile name, which is usually some random stuff).
2. There you should find a file named “downloads.rdf”, which is responsible for the downloads list in the Downloads window.
3. Delete the file while Firefox is closed.
4. Start-up Firefox, come here and say “Thanks Piry.”
That’s all. Good luck.
–The Pirahna (aka Piry)