This is pretty bad, ever since my phone has been unlocked the battery life is horrible.  Many others have reported this issue on provider unlocked phones and even jail broken phones.  We're talking issues as bad as losing 1% every 3 minutes which is what I seem to have observed as well.

For now I'm going to relock the phone, and hopefully a firmware update will address this issue.  This is very annoying and it seems apparent this is also happening on 3G phones and that it's just an issue of being jailbroken, since this happens with provider unlocked iPhones as well.

For now I'm going to be uninstalling ultrasn0w until the issue can hopefully be resolved, but of course when travelling this needs to be enabled.  Maybe the developers of ultrasn0w can make it easy to turn it on and off without uninstalling the package from cydia.