There's a new kind of fake file around, with loads of sources (up to 100). Are you looking for a really popular song or new release? These seem to be the worst effected, older & rarer things are usually ok. Try downloading an old song & see what happens.

Stay away from the files that have high numbers of sources, go for a file with 10 sources or less. Vary your search terms, try the All Types search & look at different times of day... as users in other time zones log on & off, new sources become available