Please help diagnose a major battery drain

[jeffreii]

Here's the situation - once or twice a week my battery starts plummeting. In this test it dropped 9% during the hour with very little use. Usually it's more like 1-2%. If I reboot, it goes back to normal.

The question is what's causing it? I'm using Better Battery Stats and Badass Battery Monitor in the images attached. I've also attached the Better Battery Stats log.

It seems as though "Kernel" is using the most battery...and yet in BBS it shows wlan_rx_wake as a major culprit - though I suppose those might be the same just reported differently?

Thanks