Reading a recent thread reminded me of this small tip. When flashing a new ROM or kernel, make sure SetCPU is set back at 600Mhz first or turned off all together until your new setup is up and running. This will help reduce some of the boot loops and other problems encountered. It has reduced many of my problems. When everything is good to go, go back into SetCPU and overclock to your heart's content. This is not always necessary but still a good and generally overlooked practice. If you do a data wipe before flashing this is not an issue as SetCPU will not be installed until you restore your apps.