[PapaDocta]

i notice even after deleting the HTC_CM_Guardian.lnk from the startup folder the HTC_CM_Guardian.exe is still loaded in the memory when you rest the phone so a cool workaround is to create a text file and then rename the file into HTC_CM_Guardian.exe and overwrite the existing one in the /windows/ directory and you are done... the setting should stick after resting!

try that