nightcraw1er.488: Yay, at least one other person here see's the light.
Ban all clients! Point 1, download via browser, nothing to do with Downloader or other software.
blotunga: Ah. For some reason misread about using the downloader. Downloading via browser is crappy++. The download speed at least for me are about 10 times slower than using the downloader for example.
Try using the DownThemAll! download manager add-on (for Firefox, not sure about other browsers). It basically does everything the downloader does and much more.
I never had the problem you mention, though, and have easily reached 10+ megabytes-per-second download speeds, with and without the download manager.