A faulty download is when you have downloaded a file, an episode from a TV-serie for example, and you realize that it's either a corrupt file or more presizely downloaded the previous episode when expecting the new episode.
Trying todownload ep. 19 of some TV-serie, and getting either corrupt file, or previous/old episode is defined as a "faulty download".
A case of diarrhea where the feces escapes the anus at very high velocities. The shit is usually quite watery, which allows for smooth flow out of the asshole. A stomach ache usually precedes a high speed download and the person feels quite relieved after it is complete.
An expression which means essentially the same thing as keep it on the down low, except is referring to some illegal download item or site that people don't want getting found out by the FCC or RIAA.
Guy 1: Thanks for telling me about that bit torrent site last night. I got lots of awesome movies and tv shows.
Guy 2: Yeah it's great but keep it on the download. We don't need it getting busted by the FCC or RIAA.