Hello freinds
I have install the KDE version of backtrack 5 on an USB 8 Go with universal usb installer, it work fine for the first time, just after a log out and poweroff the notebook, the x server don't work :


No protocol specified
..
No protocol specified
..
giving up
Xinit Ressource temporarily unavailable (errno 11) : unable to connect to X server

waiting for X server to shut down ddxSigGiveUp: Closing log

xinit: Server error.
xauth: error in locking authority file /root/.Xauthority