I just got one in today with the EIC amount changed by the IRS.  The letter said EIC was calculated wrong by the program or preparer.  What the IRS did was use last year's earned income to re-figure EIC, which we did not when filed because it lowered refund by $1,500.  So in their infinate wisdom the IRS changed it on their own.  I checked client paper copy, the filed copy on the computer and all 3 backup's and my paper copy and all used this year's income.

The letter was weird in that it said if you do not agree then just call this number and we will change it back.  Or you can write a letter and we will change it back.  Never heard the IRS speak that way and it was not a normal CP2000 or even a response form with it.