[GuyWithNoLife]

Same with me... started about 2 weeks ago... has happened maybe 3 times, soft reset fixes it each time.

I'm using the stock Sprint rom... I've done the power saving reg edits, the registry change so the end call button hangs up immediately (instead of 3 seconds)... no other programs installed really. I did add some contact pictures for people and assigned different ringtones for different people... I never noticed the problem before I did that. It's a rare issue though.