Nokia E61 Transfer VoIP Call Bug

Hi!
I have an Asterisk 1.4 VoIP Server and found two ways to transfer a call ...
Unfortunately both ways are not working properly ...

1. Automatic transfer
When you have an active call and choose Options -> Automatic transfer and then enter a number you get the "Waiting for acceptance to transfer call" message. The call is not transfered until you hang-up.

Question: Is this normal or should the phone hang-up automatically?

2. New call and then transfer
When you have an active call you can choose Options -> New call -> Internet call. After entering the number ...

a. the Standby application crashes
b. the call gets transfered and the Standby application crashes and displays a light bubble with the text "call1".

In both cases I can only restart the phone by pressing the power on button.
Does anyone know the solution to my problems?

TIA, Mike