Just like to point out the temperature monitors still doesn't update on my 1.67Ghz Powerbook G4 15" (HiRes). Only when I launch the Temperature Monitor widget does the temperature update.
The temperature monitor does not seem to update itself. It's only when I launch the TempMonitor widget do I see that the SysStat temps get "jumpstarted" to reflect the current temperatures.
iStat nano
iStat Pro
I'm using a Powerbook G4 1.67Ghz (hi-res) model.