I am usually overclocked to 805MHz, I did not 'declock' before I entered the first line and everything worked when I ran JoikuSpot. I've had no instability (on the N900, my personal life is another story!) Failure to enter the second line one time did not seem to cause any issues. I believe this is a worry free sort of thing that will not interfer with other functions. That has been my experience. I also tried to enter the lines of code using QueenBee widgets but that didn't have the desired result. Too bad, that would save a lot of code entering over the long haul.