After installing the new BT5 R2 earlier this morning, I had trouble playing some of my videos using VLC. It seems that it doesn’t like being run with root privileges (and for a good reason if I might add). BUT, for BackTrack users here is a simple solution: open the /usr/bin/vlc binary file with vi and replace the string geteuid (around 2,1035-1549) with getppid. Save and exit.