After I flashed the EnergyROM 3.0 HERMAN 20090601 Titanium.rar I seem to be running into the same issues as
Devilstrider.
Data call failure error code 67 registration failure. Your PCS vision user name and password may be incorrect.
Looking at my Device Info - I see that my MDN and MSID are both entered with some generic info as is the Current username. Seriously WTF just happened? How could a ROM DO this? I've flashed over 100 ROMs by now on this thing and never once had a data issue like this.