I don't really know what else to try. I've tested it an old iPhone 3G (iOS 4.2.1) and a 4G (iOS 5.1) and cannot replicate it. Is it possible you could try and get one more crash log?
just fyi. this is a pretty much vanilla iPod (installed a couple of games from appstore before). I only jailbroke it to install blockchain.
I'm trying again, but it doesn't get around to crash any more, just makes my iPod unusable. (cannot get to menu or taskmanager, only thing left to do is turn on/off "voiceover" or switch off the device.
did you actually receive any crash reports by your new method? if not, maybe you can remove it again in the next version so maybe we stand a chance again to get a crash report and the symbols work?