Software :: ACPI Not Seeing Sensor Data

I'm trying to configure the critical trip points on a bunch of servers so they will shut down automatically if they get too hot. Problem is, acpi doesn't seem to see any of the sensor data and /proc/acpi/thermal_zone is empty. Oddly enough, when I run "sensors," I get info back. Also, i2c and acpi appears to be installed according to modprobe and dpkg.

Here are the relevant outputs:
plasmo:/proc/acpi/thermal_zone# sensors
lm78-i2c-0-2d
Adapter: SMBus I801 adapter at 0400
VCore 1: +2.34 V (min = +0.00 V, max = +3.49 V)
VCore 2: +3.68 V (min = +2.96 V, max = +0.08 V)
+3.3V: +3.30 V (min = +1.54 V, max = +3.42 V)
+5V: +5.51 V (min = +5.51 V, max = +4.30 V)
+12V: +9.73 V (min = +10.94 V, max = +2.13 V)
-12V: -10.85 V (min = -11.57 V, max = -5.17 V)
-5V: -3.83 V (min = -2.96 V, max = -4.50 V) .....