I got through the main quest OK, but on my third visit to the casino (on side quest where I just recruited the singer) the game freezes at the end of the chairman greeters dialog. Of course the autosave is stuck at that point. I reloaded a previous from 30 minutes back, went back to the casino, and the freeze happened again. I tried both doors to the casino and all the dialog option to same result. The was my first freeze in 16 1/2 hours of play.

**UPDATE** I did the above with a companion so I went and got Boone, told him to follow me and walked into the Casino w/o issue. Very strange that made a difference.