The answer is...

[susandennis]

Apparently, when the IRS gets it's first check bounced, it waits a week and sends it back again. The credit union bounced my check on 3/30. The IRS came and claimed their dough on 4/6.

Whew. Next in this 3 act play is making sure they get my estimated tax on 4/15.

And then, we have act 3 which is the letter wanting more info on 2003. I did hear from them last week. A lovely letter telling me that they got my response and I could expect to hear from them in 60 days. The letter also urged me to pay up since the interest will continue to accrue over those 60 days. Good advice except they have not told me how much....