After reading everyone's posts about how the NUMS status check page hasn't been updated in months, I just figured everything was OK. I sent my secondary in in early November, and my references all sent their letters in. Yesterday however, I figured I'd call them to make sure everything was OK, and lo and behold, no, it wasn't. One of my letters of rec wasn't sent on letterhead stationary, so it was no good. It would have been really nice if they'd let ME know this, instead of just letting my file sit. I got the sender to resend the LOR again today, but now I'm waaaay behind here. This is the third school something like this has happened, so EVERYONE, if you haven't already, call all the schools you haven't heard from and ask what's up.