Sorry no ideas other than to reflash to something fresh. I just wanted to chime in because I've noticed this also and can't recall anyone posting about it. I typically don't stay with one rom a long enough time to notice, but when I do, there it is a slow degradation process starts and a HR does not help for long. A side note tho: When I had gsm devices it didn't seem to happen. My cdma tp1 and tp2 I notice it sometimes.
I just reflash, gives me an excuse
