For anyone running Peekawho, sometimes if you are on a call, or reading messages, or whatever, you may receive another message, and sometimes, even though you read and delete messages, the notification LED wont go away. I found if you go into Peekawho, and select, test popup, then close the popup, the light goes out, no need to reset the phone. Just a little info here........
I noticed the same thing. The lights are still in beta so there are bugs. Hopefully they'll fix that on the next release because I love love love PeeKaWho.