I'm running LFY and an 1100mhz kernel that I let fall to 250mhz. I've noticed that when I get an incoming call sometimes my mp3 ringtone is a bit...slow... I'm going to assume that is from the underclocking and if it really bugs me maybe I'll see if it can use a wav. The other thing I've noticed though is that when the phone rings it can sometimes take up to two rings for it to match the caller id number to a contact in my phone book. That is somewhat more irritating. Is this an underclocking related problem?