Default [U]Unable to activate bluetooth w/ JB v6 + experimental v11a

Hi guys,
Yesterday i finally decide to unlock my bootloader and switch to JB with my Xperia u.
I choose the v6 lite vu Devswift, and i follow the installation instructions. I flashed experimental kernel v11a, did my wipes and flashed the rom with cwm. Everything went well and i now enjoy my phone with nice look and good speed, but...
I can't activate bluetooth. When i try to turn it on, it turn on for like 0,1 sec and turn back off !
I choose this rom cause the OP say BT is working so i'm a little bit disappointed with this. I use BT very often.
Can anybody help me with this problem ?
Thanks

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