diamond tweak or advanced config changed a reg setting on ya. the data connection resume is goofed and won't let you answer calls
from the TP essentials sticky:
"Issues with answering your phone when a data connection is open (answer buttons don't do anything)? Looks like a tweak messes up a registry key that affects this. [HKEY_LOCAL_MACHINE\Comm\ConnMgr\Planner\Settings], make sure SuspendResume is set to #777 (not anything containing GPRS). This issue seems to be related to Advanced Config.
source"