OSU's admission system is pretty tricky. I've got the official acceptance email today, but when I checked my application status yesterday, I found 3 new sections under application requirements tab: Affidavit of Support, Confidential Bank Statement, and Copy of Passport. I think you might want to check that for "unofficial" acceptance.
Anw, what is the expected date for OSU's fellowship result? The first fellowship result posted on thegradcafe last year was March 1. Is it really that late?