In the immortal words of Bart Simpson, "Crappity Crap Crap Crap." I was out on a FTF run this morning, and I found the first one with no problem. Driving away from that one, it died, and it started back up when I put in new batteries. Then, while trying to hunt for another cache, it just plain froze up, and now it won't start back up again. Time to send it back. Bummer, and I was planning on using it for a numbers run next week while I'm on vacation. I still have my old unit, though.