I had to call directly to the Tax Assessors office about a month before the deadline. It took at least 6 calls to get it done. I'd call and give credit card number, they would say OK. The charge never appeared; I'd call back...same thing. Finally, about a week before the deadline, TWO charges appeared. Then it took me another two weeks to get a credit back for the doubling.
At the end of the ordeal, I did only pay the discounted rate.
Moral of the story: GET ON IT NOW!...
BTW, I STILL have NEVER received a bill for the 2008 taxes I had to pay myself...I only found out about it through the link in post #1 back then AND again this year. I watch that newspaper every day...