Slackware 11 ships with lm_sensors 2.10.0. However, with kernels >= 2.6.19
an upgrade is required as posted on their website:
http://www.lm-sensors.org

"December 5th, 2006: Note to k8temp users. The Linux 2.6.19 kernel
features a new hardware monitoring driver, k8temp, which supports all
recent AMD K8 CPUs. The driver will load automatically on supported
systems. Due to technical specificities of this driver, upgrade to
lm_sensors 2.10.1 is mandatory. Older versions of libsensors will fail
with a "General parse error" message. If you can't upgrade lm_sensors for
any reason, you'll have to blacklist the k8temp driver to prevent it from
being loaded. Thanks to Artem S. Tashkinov for notifying us."

HTH

--
Peter