With this update, Speed Download is running perfectly and without issue so far. I basically tried this app for the hell of it after previous bad experiences with download managers. Not only does it provide fast downloads, it also offers a plethora of handy features. Hightly recommend!!

Seems to have fixed an issue where SD would not remember my User/Pass while uploading to remote SD i was having when uploading files to a remote SD user. Also, this update seems to have resolved a persistent (GUI?) context error i noticed in my console.log:
/Applications/Network/P2P/Speed Download 3/Speed Download 3.app/Contents/MacOS/Speed Download 3: CGContextFillRects: invalid context