Knew it.

I'm almost willing to put money on this.

Everyone who's criticizing this guy for running with a minimum 850mhz clock needs to realize:

The only thing this affects is the idle processor speed.

If your max is 850mhz, you are doing the exact same thing to your processor every time you do anything cpu intensive.

If your phone is busy making a tar.bz2, rendering flash, compiling, booting.. or anything else, your minimum = maximum.

The idle path in the CPU is extremely high resistance, and idling at 850mhz creates virtually no additional heat.

And another thing.

40C will not harm any processor. Neither will 50C. Ever.

Surface mount components are baked to the board when they are installed, and this happens at temperatures well over 200C.

The only risks are frying the CPU's power supply, the unit's SMPS, or overdrawing the battery. That or dielectric breakdown due to excessive voltage, but this happens instantly, not over time.