I run a small home server behind a DSL. Its based on an old
PIII-Coppermine 800MHz laptop. I disconnected the fan, I used cpu_freq
to downclock it permanently to 650MHz. The system is quiet and cool -
except if system load gets very high. Than the CPU Temp rices above 70C.

Is there a tool/module to keep the CPU from getting to hot? Maybe
something that inserts some halt statements - its no problem, if it
slows down the system.