In Wisconsin, brain freeze.

MILWAUKEE (AP) -- Wisconsin's revenue agency said Friday that it sent as many as 170,000 forms to taxpayers with mailing labels mistakenly printed with their Social Security numbers.

The state Department of Revenue was scrambling to alert taxpayers to be on the lookout for the mailings.

"We want to prevent any chance identity theft might occur," department spokeswoman Meredith Helgerson said.