Palm Pre modder who goes by the name "unixpsycho" is living up to his nick with a new bit of firmware that comes with following disclaimer in big, bold, red lettering:
"DO NOT INSTALL THIS IF YOU LIKE YOUR PHONE!!! YOU HAVE BEEN WARNED!!!"
If that sounds over the top, consider that his latest firmware -- SR71 Blackbird -- pushes the Palm Pre's OMAP 3430 processor to 1.2GHz. That's twice the speed this little chip was meant to run at, which ships stock at 600MHz.
For those willing to throw caution to the wind, there are some safety measures that keeps this from being a total smartphone suicide mission. Temp monitoring comes built in, and whenever the chip jumps past 55C, the firmware ramps things down to 500MHz, "or at least it should."