Who's really on the hook for the mortgage mess? (Diana Olick)

Dealing with robo-signings and trying to figure out who's really on the hook for the mortgage mess, with CNBC's Diana Olick and Kate Kelly.

And while the banks and courts deal with robo-signers and overall sloppy paperwork, the volume of defaults and foreclosures continue to rise. From Diana Olick's blog: Foreclosure "actions" in Q3, which include anything from default notices to bank repossessions, rose in 65 percent of the nation's top 200 housing markets. More from Diana Olick