Yazsoft has released Speed Download 2.3.6, an update to its download manager for Mac OS X. Version 2.3.6 is updated and optimized for Mac OS X 10.3.5, and offers better integration with Safari, full support for all .DMG files, improved downloading of queued items, and more. In addition, the developer said that Speed Download has been moved to Apple’s Xcode for better performance. Speed Download is priced at US$20.