From: The IRS
To: Me

This is not a bill
We changed your account

How we changed your account:
Account balance before this change: $11,348.58 Due
Decrease in tax because of this change: $11,208.00 CR
Decrease in interest previously charged: $140.58 CR
Amount you now owe: None

Other actions you may wish to take:
If you do not agree with the changes to your account or if you have questions about this notice, you may call 1-800-829-8374.

W00t! I'm sure you called them right away to let them know that you don't agree with the changes, right? *grin* - Mara

I'm not really sure why, but someone was searching on google for '800-829-8374' (the IRS phone number), and found this site. I did the same search, to figure out what they might have been looking for, and found that the site that comes just before me on the search results is a site written by people who believe that ones' social security number is too much like 'the mark of the beast', and should therefore not be required.