Regarding the headset jack bug:

It IS an ICS or at least Android in general bug. It has occured since v1 of Android .. solved in some of the newer versions (v3) and then coming back in ICS.

The good thing is that many users reported that an app named SoundAbout (Click) solves this problem for them. Maybe someone could confirm that for the sediROM?

The app will look for the headset_plug event and others and then will do the correct sound routing.

Thanks in advance
xdajog
I really love keyboard smartphones ...
PETITION FOR MORE QWERTY PHONES! >Click here< and sign the petition so Qwerty may not die...

My "Keyboard-History"

Alive:
Samsung Captivate Glide / SGH-I927 (rollin on sediROM v1.0)
LG Optimus F3Q (rollin on Stock JB, rooted)

Retired:
 

HTC Desire Z / Vision (my 1st Droid ) , Nokia N97 mini, Nokia E90 Communicator, Nokia 9300i Communicator, Nokia 9210 Communicator, Nokia 9500 Communicator