This cold reboot started happening to me about a week after purchasing the 8800. Mine does a cold boot at least once a day and it is usually when I am taking it out of the holster, however, I have also had cold boots when trying to make a call on the unit, but when calling thru the Jawbone, it does not cold boot. My cold boots still happen with or without BBWeather. I am not running any additional apps when I get the cold boot. Glad to see it is not just me. Hopefully, someone out there will come up with a reason this happens and then we can all live happily, or at least until the 8300 comes out.