I will check that as soon as I get home
Anyone with same problem?
So I have news about your problem. Firstly my PC didn't show anything when I connected my phone so I thought that I have this problem too. But then I rebooted to recovery (wanted to flash the newest Carbon because recent nightlies have bug with 'active display' feature), wiped dalvik cache and then it worked and my sdcard is accessible through PC.
Therefore, it is not kernel related problem, or at least not unsolvable one
I hope that you will manage to succeed in it too.
Are you using UMS mode available in Boeffla Config app?