Fed tightens against housing bubble fears

Double-digit price gains 'not sustainable' in '05

Mortgage rates are still close to 5.75 percent, but could not hold their lows.

Eight days ago the 10-year T-note was 4.42 percent and about to blow out the top. Then, by early this week shaky job news, currency manipulation by central banks, and an immense wave of short-covering conspired to take the 10-year to 4.08 percent.