Rated 4 out of 5 stars
I use this addon since long time. But some weeks ago, I got in trouble while downloading files with new, longer filenames. The download doesn't start and cannot be removed from the download status line except by removing the addon (afterwards reinstalling). Removing the download simply from the firefox download list didn't resolve the problem as the file isn't shown there.
It seems to happen with very long or invalid file names.
Maybe this issue can be resolved in a further update...