[alsosun]

I had the same problem. Mine was this:

Do the following test: Make sure data is turned off, then call cell. If there is still a delay, then you have another issue. If there is no delay, then here is the solution:

The tweaks setting for data connection to auto timeout puts a reg setting in HKLM/Comm/ConnMgr/Planner/Settings/SuspendResume
there should only be the following value : #777


If it says somehting like If _ bye_, then that is the problem.
Get a reg editor program (google reg edit 0.9) and change it.
Hope that helps