What was the text of your "decision" notification?
Mine reads: "The Admissions Committee has reached decision on your application file and you will receive a written decision soon. Please be patient with the postal system. Please wait for 10 to 14 days to receive your written decision before contacting the Admissions Office."
I wonder if accepted students get the same text, or if the stuff about waiting 10-14 days is not there for them.