After submitting my personal returns to federal and state, I received an assessment from the state showing I owe a lot of $$$ and showing taxes withheld for 2012 as $0. I then checked my W2 which shows taxes withheld however I noticed a mistake in that my ss# was off by 1 digit.

I know I have to inform my employer and have him issue me a corrected W2C but do I send that to the IRS premptively? The W2C form online that I viewed seems to ask for it to be mailed to the SSA.