Odd, I have a CentOS machine on an Atom 330 and sensors works fine, here is the output, perhaps it may help
- Ernie.
2.6.18-164.6.1.el5 #1 SMP Tue Nov 3 16:18:27 EST 2009 i686 i686 i386 GNU/Linux
$ sensors
smsc47m1-isa-0680
Adapter: ISA adapter
fan1: 0 RPM (min = 1280 RPM, div = 4)...