wasabi,
The places I've been calling up to check on my status have been situations where I knew I was going to be in the area for another interview and wanted to coordinate them....Plus, I really don't think they mind as long as you're courteous and not demanding and respect whatever they tell you without becoming a pest about it.
I heard from UCSF about 2 wks. after I sent the secondary (which, as u know, was hell!). I've called UCLA a couple times and they keep saying my app. is complete and ready for review.... 🙄