Mobea is right, but it depends on when FIDELITY records the distribution.
If they recorded the distribution on 28 Dec 2006, then it is taxable for 2006.
If they recorded the distribution on 2 January 2007, then it is taxable for 2007.
If you got a Form 1099-R for 2006, that settles the issue in the eyes of the IRS.
AtlantaTaxExpert, thank you. I never hurts to ask, which is why I asked the IRS to consider that Fidelity might have incorrectly reported the distribution. What do they call the time frame between reporting money paid and actually paying it - float. Can Fidelity legally "float" a payment? -Report it as paid, but not actually pay it for several days? Does the method of payment matter? This was an EFT payment not via US Mail. Well, this is all conjecture at this point in time.