Yes, this is used in NHM right now.
Regarding crashes. We will not deny that it cannot happen. We used some unsafe shared memory to gain extra speed. The crash possibility is very low. That is why there are auto-restart scripts included. If crash happens, it will not break your driver, so restart fixes it and you keep on mining.
It would be nice if you can share the script that won't break the driver if crash occurs. Thx
Just usual loop script. The trick it how the program crashes - if it is due to too high overclock, it would crash the driver alltogether. If it is an error in cuda app such as invalid memory access, it will crash without driver crash thus simple restart is possible.