It is very frustrating that when looking for a replacement for any downloadtool of the "old" Firefox (DownThemAll, Flashgot, ...) always this is the suggested solution. This extension is terribly slow, filtering according to file-types doesn't work properly - from my point of view it is faster downloading all single files one by one rather than getting frustrated by this extension. I am wondering if Firefox developers are testing the extensions at all before putting them on the replacement suggestion list.