Support for DownOff is available from the publisher site.
Short description: DownOff monitors average download rate and initiates computer shutdown if the file transfer or download rate has been below a specified rate for a specified length of time. Requires a registration code to run....
To speed up your downloads we recommend you use a download manager such as 
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Easy but powerful backup and synchronization of laptops, PCs, servers, and backup storage. Multiple profiles, FTP (with SSL), SSH, WebDAV, Amazon S3, http, partial file updating, ZIP and encryption support, as well as a scheduler & Real Time Sync.
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