I don't know if anyone else has experienced this, but I just jailbroke my phone with Pwnage 4.3, and now I have really low signal strength with AT&T, only one bar, no matter where I go. I live in Las Vegas, where there is pretty good coverage, and it doesn't seem like the 3G is any slower, but still only shows one bar. Should I be worried? Is there a signal booster tweak out there? Any ideas?