I use a 3G iPhone that I have jail broken with Pwnage Tool 3.1.5. The jailbreak worked fine, however, springboard seems to be pretty unstable. At least once every two hours, my phone has to be resprung as it enters safe mode. Anyone else experiencing this issue? Any ideas for solutions? I did not unlock as I am on the AT&T network.
I'm not totally sure, but I think when the phone crashes to safe mode, it's mobile substrate that saves the phone from locking up (and instead puts it in safe mode), so I'm guessing it's an MS app.
You can check which mobile substrate apps you have by going into SBSettings > Mobile Substrate Addons. Here you can also disable them. There's a warning listed there that you should read. In any case, be careful with what you disable.