MacBook Pro 2010 Crash (Nvidia)

Sometimes my MacBook Pro 2010 crashes, the crash report show problems with the nvidia driver. Sometimes it happens after waking up the systems, nut I also had crashes after a reboot during normal operation.

In the net I found the following hint, which helped me up to now:

In the directory ~/Library/Preferences/ByHost/ delete all files, that have “windowserver” in their name and reboot the computer.