I have in this impressive rom issue,
that if I check change mp3 by long press volume button, jump out of menu and then return back, it is uncheck. So this is impossible check this option :(.
Another simillar problem is with camera sound. If I check that i donť want sound and then if I take a picture, I can hear the sound :-/.
Then the last one what I have (accept buggy camera of course): when display is going to more dark, then he does something like turn lighting to about 50% and then to zero and device sleeps. Display blink or flash, something like that - I don't know exactly how to say it. Sorry about my english :).
One last thing I have - Is there any possibility to turn off data in background like in android 2.3?