Psensor only shows HDD and CPU usage, not temperature

AMD 10h k10temp kernel doc

Is the k10temp module loaded? It's part of the standard ubuntu kernel.

ubuntu-precise$ modinfo k10temp
filename:       /lib/modules/3.2.0-24-generic/kernel/drivers/hwmon/k10temp.ko
license:        GPL
author:         Clemens Ladisch 
description:    AMD Family 10h+ CPU core temperature monitor
srcversion:     7C939FE331D037CED8E383B
alias:          pci:v00001022d00001603sv*sd*bc*sc*i*
alias:          pci:v00001022d00001703sv*sd*bc*sc*i*
alias:          pci:v00001022d00001303sv*sd*bc*sc*i*
alias:          pci:v00001022d00001203sv*sd*bc*sc*i*
depends:        
intree:         Y
vermagic:       3.2.0-24-generic SMP mod_unload modversions 
parm:           force:force loading on processors with erratum 319 (bool)