I do not recommend this add-on! Because it will check every 30 seconds your download history (this will definitely slow down your browser). Search for "Download Auto Resumer" for an alternative add-on.

Garbage. Always comes up with 'NETWORK ERROR' and retries 10 or 20 times but as soon as I manually click on the Retry button in the download panel it starts again. Why the hell upload something when you don't test it.