My gosh, I hope this isn't true. I've been taking my time - not outrageous time, but 2-4 weeks - with my secondaries, mostly because I'm trying to do a really good job on them and have been busy with other things. I'd hate for that to be interpreted as a lack of interest.
I turned in one secondary a bit late - I mailed it so close to the deadline that it probably arrived slightly after the deadline. I'm hoping that schools aren't going to make a big deal out of being a day or two late.