Just thought I'd tell you all about the experience I've uncovered with Lockbot and airplane mode as well as the workaround for it. Although I didn't really notice any huge problems with battery life, I decided to check out the 50% without signal bug. Sure enough I have it. So I switched into airplane mode briefly to clear the problem, which it did (0% without signal currently). The problem is that this knocked Lockbot offline and me back to the standard lock screen (including the one with the airplane when in airplane mode). I entered Lockbot and messed around a little, then exited. Normally this would enable Lockbot but no dice this time around. A reboot of course solved the Lockbot problem, but then I had the 50% bug again, which was of course fixed using airplane mode, which then naturally stopped Lockbot. What I found that worked was to use airplane mode to stop the 50% bug, enter Lockbot and uncheck enable Lockbot (disabling it even though it was already disabled), exit Lockbot, return to Lockbot and check the box again to enable it. Problem 'solved'.