Comment 2 for bug 230850

The version of sensors-applet in Hardy uses libsensors3, which seems to have a habit of naming the sensors slightly differently than the previous version of libsensors. So if the name of the sensors is different, your previous configuration may not be applied. sensors-applet does not read libsensors3.conf directly, it is done via libsensors. So if there is indeed a bug, it is in libsensors (or lm-sensors package) not sensors-applet.