Experiencing the same problem using 295.20 with a GeForce 9600 GT on Arch Linux x86_64.
When it does occur, it helps to delete the history of recently opened documents. Also, if you happen to have this gnome-shell extension
installed and a crash occurs, you may have trouble logging in again. In this case, switch to a tty, login with your regular user account and run the following command to manually delete the history... or you disable this extension and delete the respective file.
echo "" > ~/.local/share/recently-used.xbel
Attached a log created with nvidia-bug-report.sh as root-user.