Another nominee, another tax "error"

I'm waiting for a nominee to be reported as "overpaid their taxes"; things seem so unbalanced:

Health and Human Services nominee Kathleen Sebelius recently corrected three years of tax returns and paid more than $7,000 in back taxes after finding "unintentional errors"—the latest tax troubles for an Obama administration nominee.
...
Several Obama administration nominees have run into tax troubles, notably the president's first nominee for HHS secretary, former Senate Democratic leader Tom Daschle. He withdrew from consideration while apologizing for failing to pay $140,000 in taxes and interest.

UPDATE: There's some weirdness around her mortgage, too.