I heard from the former chair of the Chem. department at MIT that MIT was particularly hard-hit financially and had simultaneously seen a rise in the number of applicants. My PI told me recently that MIT had at least one endowment worth ~ $2 billion that had been managed by Bernie Madoff. Ouch. So yeah, I think that the economy is definitely having an impact on the number of students that they admit.
Given the results page...I'd say a few people have.
I contacted Professor Lippard, and he said that I've neither been admitted nor rejected. I'm guessing that if you haven't heard yet, you're probably a tier two candidate, i.e. neither auto-reject nor auto-admit. They might be taking their sweet time; one of my profs. here suggested that they like to delay things.