Alt-A Problem is bigger than sub-prime

[Mark Key]

There are 500k sub-prime loans out there right now 41% of them are in default with late payments not to mention all the forclosures,and there are 700k Alt-A laons 54% of all of them were cash out refi the biggest contributor to loan defaults are negative equity my question is who sets the values on these homes are there any appraisers here that can give us the answer or is it the slow economy thats doing it and if so than its everyones fault that this is happening any opinions ?