I currently have it set to 800Mhz maximum, scaling. The kernel I used is at: P3Droid Kernels No Custom ROM. So just installed the kernel on top of my rooted 2.1. Now, after a day, I feel no significant increase in speed at 800 Mhz Max. Is it ok to go to 900 or even 1000? I have the profile set so that when it's sleeping its 250 Mhz. Also, with this setup, can I still go back to my stock 2.1 with the ORIGINAL kernel by restoring my nandroid backup (created right after I rooted, but before installing the new kernel) from SPRecovery?