As a free user I do not have any problems downloading from Uploaded.to
Occasionally they have a "all free download capacity is exhausted, please try again later" message, but when I try again some minutes later, it's full speed for the download.
Of course, my full speed is about 50kb/s, so it's not huge, but it IS consistent in the mornings and evenings (European time) and every download completes properly. ... Day-time it slows to a crawl (possibly just ISP shaping on my small line) and most large file downloads will be incomplete, but then I do have a day job, so it's not all bad ... I need to concentrate on work for a while