Since I jailbroke my 3GS on 3.1.2 yesterday, I have been unable to use 3G or Edge for more than a few minutes. Generally it will load a few pages, then suddenly stop working. The second I tap a link or press enter, an error will pop up and go away automatically. This is temporarily fixed after doing a respring, but then comes back. I have tried resetting network settings and restarting the phone. Anybody else having this problem? Any ideas on how to fix it? Thanks.