I have a lot of links like "download.php&id=1234". This extension saves all those links as file with "download.php" name. While FF itself honors Content-Disposition response header (filename parameter).
The addon is already checking for Content-Disposition, but not much can be done if the HEAD request for Content-Disposition fails. Actually hooking into Firefox's download filename has to wait until Firefox implements Chrome's onDeterminingFilename API.
