T610: radio mute active with voice dialing "magic word" active on car phone kit

Hi all,

i just installed a handsfree car phone kit. I would like to use the voice
dialing feature without pressing any button (I'd rather keep my hands to the
steering wheel). Now, the phone can be activated by the "magic word"
feature. However, when I activate this, the radio mute is also activated,
and there's a constant noise on the external phone speaker.

I think this is a software bug. Does anyone of you have the same problem, or
is it fixed in any new firmware (I have the R1L013 installed)?

Mo